Common use of Settlement Option Clause in Contracts

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2013-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager 2 LTD. By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7JFIN CLO 2014-2015, Ltd. II LTD. By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015SENIOR LOANS MATURITY 2020, Ltd. ByLTD. BY: HPS ▇▇▇▇▇▇, ▇▇▇▇▇▇ & Company, L.P., Its Investment PartnersManager ▇▇▇▇▇▇, LLC▇▇▇▇▇▇ & Company, its Collateral Manager L.P., Its General Partner By: /s/ ▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan ▇▇▇▇▇▇ FOUNDATION HOSPITALS BY: Ares Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Lord ▇▇▇▇▇▇ Investment Trust - Lord ▇▇▇▇▇▇ Floating Rate Fund By: HPS Investment Partners, Lord ▇▇▇▇▇▇ & Co LLC, its Collateral As Investment Manager By: /s/ ▇▇▇▇▇▇▇ Posner Name: ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Posner Title: Senior Vice President Associate Portfolio Manager If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7PARK AVENUE INSTITUTIONAL ADVISERS CLO LTD. 2016-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager 1 By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. ATRIUM X By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XI, Ltd. ByBY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7Anchorage Capital CLO 2013-20151, Ltd. By: HPS Investment PartnersAnchorage Capital Group, LLCL.L.C., its Collateral Investment Manager By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXVII CLO Ltd. By: HPS Investment Partners, Ares CLO Management LLC, its Collateral Manager asset manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XXIII, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its LLC as Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015ARES ENHANCED LOAN INVESTMENT STRATEGY IR LTD. BY: ARES ENHANCED LOAN MANAGEMENT IR, Ltd. ByL.P., AS PORTFOLIO MANAGER BY: HPS Investment PartnersARES ENHANCED LOAN IR GP, LLC, its Collateral Manager ITS GENERAL PARTNER By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Anchorage Capital CLO 3, Ltd. By: HPS Investment PartnersAnchorage Capital Group, LLCL.L.C., its Collateral Investment Manager By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. STATE OF NEW MEXICO STATE INVESTMENT COUNCIL By: HPS authority delegated to the New Mexico State Investment PartnersOffice By: Credit Suisse Asset Management, LLC, its Collateral Manager investment manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7PARK AVENUE INSTITUTIONAL ADVISERS CLO LTD. 2017-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager 1 By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Pramerica Loan Management 7-2015, Ltd. Opportunities Limited By: HPS PGIM, Inc., as Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ NameSenior Floating Rate & Fixed Income Fund By: ▇▇▇▇▇▇, ▇▇▇▇▇▇ & Company, L.P., Its Investment Manager By: ▇▇▇▇▇▇, ▇▇▇▇▇▇ & Company, Incorporated, Its General Partner By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇ Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇ Title: Senior Vice President President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan ONTARIO PUBLIC SERVICE EMPLOYEES UNION PENSION PLAN TRUST FUND By : AELIS X Management, L.P., its investment counsel By : AELIS X Management 7-2015, Ltd. By: HPS Investment PartnersGP, LLC, its Collateral Manager general partner By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Lloyds Banking Group Pensions Trustees Limited as trustee of Lloyds Bank Pension Scheme No. 1 BY: Ares Management 7-2015, Ltd. By: HPS Investment Partners, LLCLimited, its Collateral Investment Manager By: /s/ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Marathon CLO V Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Trinity Health Corporation (d/b/a Che Trinity Inc,) By: HPS ▇▇▇▇▇▇, ▇▇▇▇▇▇ & Company, L.P., Its Investment PartnersManager By: ▇▇▇▇▇▇, LLC▇▇▇▇▇▇ & Company, its Collateral Manager Incorporated, Its General Partner By: /s/ ▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7QUAMVIS SCA SICAV-2015, Ltd. FIS: CMAB - SIF - Credit Multi Asset Pool B By: HPS Marathon Asset Management, L.P. Its: Sub-Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Ocean Trails CLO VI By: HPS Investment Partners, LLC, its Collateral Five Arrows Managers North America LLC as Asset Manager By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager Metropolitan Life Insurance Company By: /s/ ▇▇▇▇▇ ▇’▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇’▇▇▇▇▇▇▇▇ Title: Senior Vice President Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager MARATHON CLO VII LTD. By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XIII, Ltd. ByBY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Ares XXVII CLO, Ltd. By: HPS Investment Partners, Ares CLO Management LLC, its Collateral Manager asset manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7JFIN CLO 2015-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager II LTD. By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Marathon CLO VIII Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XIX, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as collateral manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Renaissance Floating Rate Income Fund BY: Ares Capital Management 7-2015, Ltd. By: HPS Investment Partners, II LLC, its Collateral Manager as Portfolio Sub-Advisor By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXVIII CLO Ltd. By: HPS Investment Partners, Ares CLO Management II LLC, its Collateral Manager asset manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. JFIN CLO 2016 LTD. By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2016-2015, 1 Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XXV, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as collateral manager By: /s/ ▇▇▇▇▇ ▇▇, ▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇, ▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. MARATHON CLO IX LTD. By: HPS Investment PartnersMARATHON ASSET MANAGEMENT, LLC, its Collateral L.P. as Portfolio Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge ▇▇▇▇▇▇ 47 Senior Loan Management 7-2015, Ltd. Fund By: HPS Investment PartnersPGIM, LLCInc., its as Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XVI, Ltd. ByBY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Prudential Bank Loan Management 7-2015, Ltd. Fund of the Prudential Trust Company Collective Trust By: HPS Investment PartnersPGIM, LLCInc., its Collateral Manager as investment advisor By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Pinnacle Park CLO, Ltd. Ltd By: HPS Investment Partners, LLC, its GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. JFIN CLO 2013 LTD. By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2015-2015, 1 Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. KP FIXED INCOME FUND By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as Sub- Adviser for ▇▇▇▇▇▇ Associates Inc., the Adviser for The KP Funds, the Trust for KP Fixed Income Fund By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015CLOCKTOWER US SENIOR LOAN FUND, Ltd. a series trust of MYL Global Investment Trust By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager the investment manager for ▇▇▇▇▇ Brothers ▇▇▇▇▇▇▇▇ Trust Company (Cayman) Limited, the Trustee for Clocktower US Senior Loan Fund, a series trust of MYL Global Investment Trust By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. BySEI INSTITUTIONAL INVESTMENTS TRUST - OPPORTUNISTIC INCOME FUND BY: HPS Investment Partners, ARES MANAGEMENT LLC, its Collateral Manager AS SUB- ADVISOR By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Ocean Trails CLO V By: HPS Investment Partners, LLC, its Collateral Five Arrows Managers North America LLC as Asset Manager By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge High Yield and Bank Loan Management 7-2015, Ltd. Series Trust By: HPS Investment PartnersGoldenTree Asset Management, LLC, its Collateral Manager LP By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015AMMC CLO XIV, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager LIMITED By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015▇▇▇▇▇▇ PERMANENTE GROUP TRUST BY: ▇▇▇▇▇▇ Foundation Health Plan, Ltd. Inc., as named fiduciary By: HPS Investment Partners, Ares Management LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015COPPERHILL LOAN FUND I, Ltd. LLC By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as investment manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7Anchorage Capital CLO 2012-20151, Ltd. By: HPS Investment PartnersAnchorage Capital Group, LLCL.L.C., its Collateral Investment Manager By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXV CLO Ltd. By: HPS Investment Partners, Ares CLO Management LLC, its Collateral Manager asset manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Covenant Credit Partners CLO II, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Assistant Portfolio Manager If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XXII, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015MADISON PARK FUNDING XIV, Ltd. ByLTD. BY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015MADISON PARK FUNDING X, Ltd. ByLTD. BY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Internationale Kapitalanlagegesellschaft mmbH for account of GOTH LOANS By: HPS Investment PartnersPGIM, LLCInc., its Collateral as Fund Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Ares Senior Loan Management 7-2015, Ltd. Trust By: HPS Ares Senior Loan Trust Management, L.P., Its Investment PartnersAdviser By: Ares Senior Loan Trust Management, LLC, its Collateral Manager Its General Partner By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015JPMorgan Chase Bank, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager N.A. By: /s/ ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015MADISON PARK FUNDING XVII, Ltd. ByLTD. BY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. CREDIT SUISSE FLOATING RATE HIGH INCOME FUND By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as investment advisor By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXI CLO Ltd. By: HPS Investment PartnersAres CLO Management XXXI, L.P., its Portfolio Manager By: Ares Management LLC, its Collateral Manager General Partner By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015NATIXIS, Ltd. New York Branch By: HPS Investment Partners, LLC, its Collateral Manager /s/ Rob ▇▇▇▇▇ Name: Rob ▇▇▇▇▇ Title: Managing Director If a second signature is necessary: By: /s/ ▇▇▇▇ ▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇ ▇▇ ▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Managing Director Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. BySEI INSTITUTIONAL MANAGED TRUST - ENHANCED INCOME FUND BY: HPS Investment Partners, ARES MANAGEMENT LLC, its Collateral Manager AS SUB- ADVISER By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge HPS Loan Management 79-20152016, Ltd. By: HPS Investment Partners, LLC, its LLC As the Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. ATRIUM VIII By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XV, Ltd. ByBY: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager MARINA FUNDING ULC By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015AMMC CLO XIII, Ltd. LIMITED By: HPS Investment PartnersAmerican Money Management Corp., LLC, its as Collateral Manager By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇ Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2014-2015, 2 Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. JFIN CLO 2017 LTD. By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015▇▇▇▇ Park CLO, Ltd. By: HPS Investment Partners, LLC, its GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2014-2015, 1 Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Seneca Park CLO, Ltd. By: HPS Investment Partners, LLC, its GSO / Blackstone Debt Funds Management LLC as Collateral Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x o CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. ATRIUM IX By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Ocean Trails CLO IV By: HPS Investment Partners, LLC, its Collateral Five Arrows Managers North America LLC as Asset Manager By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. SENIOR SECURED FLOATING RATE LOAN FUND By: HPS Investment PartnersBy: Credit Suisse Asset Management, LLC, its Collateral the Portfolio Manager for Propel Capital Corporation, the manager for Senior Secured Floating Rate Loan Fund By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7KVK CLO 2013-20151, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager Ltd By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XXI, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. JFIN CLO 2014 LTD By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Healthcare Employees’ Pension Plan — Manitoba By: HPS Investment PartnersGoldenTree Asset Management, LLC, its Collateral Manager LP By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015State of Wisconsin Investment Board BY: ▇▇▇▇▇▇, Ltd. By: HPS ▇▇▇▇▇▇ & Company, L.P., Its Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name& Company, Incorporated, Its General Partner By: ▇/s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇ Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇ Title: Senior Vice President President, Legal and Compliance Analyst If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXII CLO Ltd. By: HPS Investment PartnersAres CLO Management XXXII, LLCL.P., its Collateral Asset Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, ▇▇▇ ▇▇▇▇ CLO Ltd. By: HPS Investment Partners, LLC, its Virtus Partners LLC as Collateral Manager Administrator By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge GT Loan Management 7-2015Financing I, Ltd. By: HPS Investment PartnersGolden Tree Asset Management, LLC, its Collateral Manager LP By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. ARES XXVI CLO LTD. By: HPS Investment PartnersAres CLO Management XXVI, L.P., its Collateral Manager By: Ares CLO GP XXVI, LLC, its Collateral Manager General Partner By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, Hereby (i) elects to have the Amendment and having 100% full amount (or such lesser amount as may be allocated to it by the Lead Arranger) of the outstanding principal Existing Term Loans of such Participating Lender repaid or purchased and agrees to promptly (but in any event, on or prior to the date that is 30 days following the Effective Date) purchase an equal amount of the Original Initial 2018 Repriced Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and (ii) represents and warrants to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent maythat it has the organizational power and authority to execute, in deliver and perform its sole discretionobligations under this letter agreement and the Amendment (including, elect not without limitation, with respect to allocate Tranche B Term Loans any exchange contemplated hereby) and has taken all necessary corporate and other organizational action to such Existing Term Lender authorize the execution, delivery and performance of this letter agreement and the Amendment. Please indicate your consent to the Amendment by consenting online via LendAmend or by submitting an executed signature page, a form of which is attached to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇@▇▇▇▇▇▇▇▇▇.▇▇▇ no later than 5:00 p.m. New York City time on June 19, 2018. For questions about signature pages or execution matters please contact LendAmend at +▇ (▇▇▇) ▇▇▇-▇▇▇▇ or (▇▇▇) ▇▇▇-▇▇▇▇. [Signature Page Follows] Very truly yours, , By: Name: Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name SCHEDULE 1 Increase Commitments 2018 Increase Lender Increase Commitment Royal Bank of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, Canada $ 30,000,000 Total: $ 30,000,000 ANNEX A [See attached.] AMENDED AND RESTATED FIRST LIEN CREDIT AGREEMENT dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31July 12, 2017, the “Existing First Lien Credit Agreement”)as amended and restated as of July 13, 2018 among LBM BORROWER, EXELA INTERMEDIATE HOLDINGS LLC, a Delaware limited liability company (the “Borrower”)as Holdings, LBM MIDCO, EXELA INTERMEDIATE LLC, a Delaware limited liability company (“Holding”)as Borrower, the Lenders party hereto THE LENDERS PARTY HERETO and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCHROYAL BANK OF CANADA, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent RBC CAPITAL MARKETS(1), CREDIT SUISSE SECURITIES (in such capacityUSA) LLC, the “Collateral Agent”) NATIXIS, NEW YORK BRANCH and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit AgreementKKR CAPITAL MARKETS LLC, as applicableJoint Lead Arrangers and Joint Bookrunners (1) RBC Capital Markets is a brand name for the capital markets activities of Royal Bank of Canada and its affiliates. TABLE OF CONTENTS Page ARTICLE I DEFINITIONS SECTION 1.01 Defined Terms 2 SECTION 1.02 Terms Generally 65 SECTION 1.03 Effectuation of Transactions 65 SECTION 1.04 Exchange Rates; Currency Translation 65 SECTION 1.05 Letter of Credit Amounts 66 SECTION 1.06 Additional Alternate Currencies for Loans 66 SECTION 1.07 Change of Currency 66 SECTION 1.08 Timing of Payment or Performance 67 SECTION 1.09 Times of Day 67 ARTICLE II THE CREDITS SECTION 2.01 Commitments 67 SECTION 2.02 Loans and Borrowings 67 SECTION 2.03 Requests for Borrowings 68 SECTION 2.04 [Check ONLY ONE Reserved] 69 SECTION 2.05 Letters of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably Credit 69 SECTION 2.06 Funding of Borrowings 76 SECTION 2.07 Interest Elections 77 SECTION 2.08 Termination and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) Reduction of 100% Commitments 78 SECTION 2.09 Repayment of the outstanding principal amount Loans; Evidence of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount Debt 79 SECTION 2.10 Repayment of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount Revolving Facility Loans 79 SECTION 2.11 Prepayment of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms 81 SECTION 2.12 Fees 83 SECTION 2.13 Interest 84 SECTION 2.14 Alternate Rate of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.Interest 85 SECTION 2.15 Increased Costs 86 SECTION 2.16 Break Funding Payments 87 SECTION 2.17 Taxes 87

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. By: HPS Investment Partners, LLC, its Collateral Manager VICTORY FLOATING RATE FUND By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, CVP Cascade CLO-3 Ltd. By: HPS CVP CLO Manager, LLC as Investment Partners, LLC, its Collateral Manager Manger By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Portfolio Manager If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge ▇▇▇▇▇▇ 50 Senior Loan Management 7-2015, Ltd. Fund By: HPS Investment PartnersPGIM, LLCInc., its as Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Pahdya Title: Senior Vice President If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. ERIE INSURANCE EXCHANGE By: HPS Investment PartnersCredit Suisse Asset Management, LLC., as its Collateral Manager investment manager for Erie Indemnity Company, as Attorney-in-Fact for Erie Insurance Exchange By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. MAM CORPORATE LOAN ICAV By: HPS MARATHON ASSET MANAGEMENT, L.P. Its Investment Partners, LLC, its Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. JFIN MM CLO 2014 LTD. By: HPS Investment Partners, Apex Credit Partners LLC, its Collateral as Portfolio Manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. Louisiana State Employees’ Retirement System By: HPS Investment PartnersGoldenTree Asset Management, LLC, its Collateral Manager LP By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XII, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as portfolio manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015Madison Park Funding XVIII, Ltd. By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its LLC as Collateral Manager By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. AUSTRALIANSUPER By: HPS Investment PartnersCredit Suisse Asset Management, LLC, as sub-advisor to ▇▇▇▇▇▇▇ Asset Management Pty Ltd. in its Collateral Manager capacity as agent of and investment manager for AustralianSuper Pty Ltd. in its capacity as trustee of AustralianSuper By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ltd. COMMONWEALTH OF PENNSYLVANIA TREASURY DEPARTMENT By: HPS Investment PartnersCredit Suisse Asset Management, LLC, its Collateral Manager as investment adviser By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇ Name: ▇▇▇▇▇ ▇▇▇▇▇▇ Title: Senior Vice President Managing Director If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.

Settlement Option. The undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and having 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender repaid on the Fourth Amendment Effective Date and to purchase by assignment Tranche B Term Loans in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to allocate Tranche B Term Loans to such Existing Term Lender or to allocate less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans in Tranche B Term Loans. Highbridge Loan Management 7-2015, Ares XXXIV CLO Ltd. By: HPS Investment Partners, Ares CLO Management LLC, its Collateral Manager collateral manager By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Title: Senior Vice President Authorized Signatory If a second signature is necessary: By: Name: Title: Name of Fund Manager (if any): The undersigned, a Lender holding Original Initial Term Loans (“you”), hereby consents to the Fourth Amendment to that certain First Lien Credit Agreement, dated as of August 20, 2015 (as amended, amended and restated, supplemented or otherwise modified prior to the date hereof, including by an Increase Supplement dated as of November 30, 2015, by the First Amendment to First Lien Credit Agreement dated as of November 30, 2015, by an Increase Supplement dated as of October 5, 2016, by the Second Amendment to First Lien Credit Agreement dated as of October 5, 2016, by an Increase Supplement dated as of January, 31, 2017 and by the Third Amendment to First Lien Credit Agreement dated as of January, 31, 2017, the “Existing First Lien Credit Agreement”), among LBM BORROWER, LLC, a Delaware limited liability company (the “Borrower”), LBM MIDCO, LLC, a Delaware limited liability company (“Holding”), the Lenders party hereto and CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as Administrative Agent (in such capacity, the “Administrative Agent”) and as Collateral Agent (in such capacity, the “Collateral Agent”) and the Lenders party thereto, which is proposed to be dated on or around August, 14 2017 and to be entered into among the Borrower, Holding, the several banks and financial institutions parties thereto as Lenders and the Administrative Agent (the “Amendment”) and to the attachment of this Existing Term Lender Signature Page to the Amendment. Capitalized terms used and not otherwise defined herein shall have the respective meanings given to such terms in the Amendment or the Existing First Lien Credit Agreement, as applicable. [Check ONLY ONE of the two boxes below] x CASHLESS ROLLOVER OPTION Each undersigned Existing Term Lender hereby irrevocably and unconditionally approves of, and consents to, the Amendment and the exchange (on a cashless basis) of 100% of the outstanding principal amount of the Original Initial Term Loans held by such Existing Term Lender for a Tranche B Term Loan in a like principal amount. By choosing this option, each undersigned Existing Term Lender hereby (i) acknowledges and agrees that the Administrative Agent may, in its sole discretion, elect not to exchange any amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans or to exchange (on a cashless basis) less than 100% of the principal amount of such Existing Term Lender’s Original Initial Term Loans for Tranche B Term Loans, in which case the difference between the current principal amount of such Existing Term Lender’s Original Initial Term Loans and the allocated principal amount of Tranche B Term Loans will be prepaid on, and subject to the occurrence of, the Fourth Amendment Effective Date and (ii) agrees to the terms of the “Cashless Roll Letter” posted on or around the date hereof to each Existing Term Lender and shall be a party to such “Cashless Roll Letter”, and be bound thereby, for all purposes hereof and thereof.