THIRD AMENDMENT TO CREDIT AGREEMENT

This Third Amendment to Credit Agreement (this “Amendment”) is dated as of May 15, 2013, and is between the Lenders identified on the signature pages hereof, WELLS FARGO CAPITAL FINANCE, LLC, a Delaware limited liability company, as administrative agent for the Lenders (in that capacity, “Agent”), BOISE CASCADE COMPANY, a Delaware corporation (“Boise Cascade”), and the Subsidiaries of Boise Cascade identified as Borrowers on the signature pages hereof (such Subsidiaries, together with Boise Cascade, “Borrowers”).

WHEREAS, the Lenders, Agent, and Borrowers entered into a Credit Agreement dated as of July 13, 2011 (as amended, restated, supplemented, or otherwise modified before the date of this Amendment, including, without limitation, by that certain First Amendment to Credit Agreement dated as of September 7, 2012 and that certain Limited Consent and Amendment to Loan Documents dated as of December 20, 2012, the “Credit Agreement”); and

WHEREAS, the Lenders, Agent, and Borrowers desire to amend certain terms and provisions of the Credit Agreement as set forth herein.

NOW, THEREFORE, for and in consideration of the premises and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

1.Definitions. Defined terms used but not defined in this Amendment are as defined in the Credit Agreement.

2.    Amendment. Subject to the satisfaction of the conditions to the Amendment Effective Date set forth in Section 4 hereof, Borrowers, Agent and the Lenders hereby agree as follows:

(a)    The definition of “Unused Line Fee Rate” in Schedule 1.1 to the Credit Agreement is hereby amended and restated in its entirety to read as follows:

“Unused Line Fee Rate” means, as of any date of determination under Section 2.10(b) of the Agreement, the applicable rate set forth in the following table that corresponds to the average Daily Balance of the Revolver Usage during the immediately preceding month (or portion thereof):

(b)    The last sentence in the first paragraph of Section 2.11(a) of the Credit Agreement is hereby amended and restated in its entirety to read as follows:

3.    Representations. To induce Agent and the Lenders to enter into this Amendment, each Borrower hereby represents to Agent and the Lenders as of the date hereof as follows:

(a)    that such Borrower is duly authorized to execute and deliver this Amendment, and that each Loan Party is duly authorized to perform its obligations under the Loan Documents to which it is a party;

(b)    that the execution and delivery of this Amendment by such Borrower do not and will not violate any material provision of federal, state or local law or regulation applicable to it or of their respective Governing Documents, or of any order, judgment, or decree of any court or other Governmental Authority binding on them;

(c)    that this Amendment is a legal, valid, and binding obligation of each Loan Party party hereto, enforceable against such Loan Party in accordance with its terms, except as enforcement is limited by equitable principles or by bankruptcy, insolvency, reorganization, moratorium, or similar laws relating to or limiting creditors’ rights generally;

(d)    that, as of the Amendment Effective Date and after giving effect to this Amendment, the representation and warranties set forth in Section 4 of the Credit Agreement are true and correct in all material respects (except that such materiality qualifier shall not be applicable to any representations and warranties that already are qualified or modified by materiality in the text thereof), in each case with the same effect as if such representations and warranties had been made on the Amendment Effective Date, except to the extent that any such representation or warranty expressly relates to an earlier date; and

(e)    that, as of the Amendment Effective Date and after giving effect to this Amendment, no Default or Event of Default has occurred and is continuing.

4.    Conditions. This Amendment shall become effective on the date this Amendment shall have been executed and delivered by Agent, the Lenders identified on the signature pages hereof, and Borrowers, and acknowledged by the Guarantor (such date, the “Amendment Effective Date”). Agent’s

delivery to Boise Cascade of a copy of this Amendment executed by all necessary parties described in this Section 4 shall be deemed evidence that the Amendment Effective Date has occurred.

5.    Miscellaneous. (a) This Amendment is governed by, and is to be construed in accordance with, the laws of the State of New York. Each provision of this Amendment is severable from every other provision of this Amendment for the purpose of determining the legal enforceability of any specific provision.

(b)    This Amendment binds Agent, the Lenders, and Borrowers and their respective successors and assigns, and will inure to the benefit of Agent, the Lenders, and Borrowers and the successors and assigns of Agent and each Lender.

(c)    Except as specifically modified by the terms of this Amendment, all other terms and provisions of the Credit Agreement and the other Loan Documents are incorporated by reference in this Amendment and in all respects continue in full force and effect. Each Borrower, by execution of this Amendment, and the Guarantor, by acknowledgement of this Amendment, hereby reaffirms, assumes, and binds themselves to all applicable obligations, duties, rights, covenants, terms, and conditions that are contained in the Credit Agreement (as amended hereby) and the other Loan Documents (including the granting of any Liens for the benefit of Agent and the Lenders).

(d)    This Amendment is a Loan Document. Each Borrower acknowledges that Agent’s reasonable costs and expenses (including reasonable attorneys’ fees) incurred in connection with this Amendment constitute Lender Group Expenses.

(e)    The parties may sign this Amendment in several counterparts, each of which will be deemed to be an original but all of which together will constitute one instrument. Delivery of an executed counterpart of a signature page of this Amendment by facsimile or in electronic (i.e., “pdf” or “tif”) format shall be effective as delivery of a manually executed counterpart of this Amendment.

The parties are signing this Third Amendment to Credit Agreement as of the date stated in the introductory clause.

BOISE CASCADE COMPANY,
a Delaware corporation, as a Borrower

By :    /s/ Kelly Hibbs                       
Name:    Kelly Hibbs
Title:    Vice President and Controller

BOISE CASCADE BUILDING MATERIALS DISTRIBUTION, L.L.C.,
a Delaware limited liability company, as a Borrower

By:    /s/ Kelly Hibbs                       
Name:    Kelly Hibbs
Title:    Vice President and Controller

BOISE CASCADE WOOD PRODUCTS, L.L.C.,
a Delaware limited liability company, as a Borrower

By:    /s/ Kelly Hibbs                       
Name:    Kelly Hibbs
Title:    Vice President and Controller

WELLS FARGO CAPITAL FINANCE, LLC,
as Agent and as a Lender

By:    /s/ Daniel Whitwer                  
Name:    Daniel Whitwer                      

Title:    Senior Vice President              

BANK OF AMERICA, N.A.,
as a Lender

By:    /s/ Gregory A. Jones               

Name:    Gregory A. Jones                     

Title:    Senior Vice President             

U.S. BANK NATIONAL ASSOCIATION,
as a Lender

By:    /s/ Lynn Gosselin               
Name:    Lynn Gosselin                    
Title:    Senior Vice President         

JPMORGAN CHASE BANK, N.A.,
as a Lender

By:    /s/ Peter S. Predun                    
Name:    Peter S. Predun                         
Title:    Executive Director                   

PNC BANK, NATIONAL ASSOCIATION,
as a Lender

By:    /s/ Kevin J. Gimber                  
Name:    Kevin J. Gimber                       
Title:    Assistant Vice President          

Acknowledged and Agreed:

BOISE CASCADE WOOD PRODUCTS HOLDINGS CORP.,
a Delaware corporation, as Guarantor

By:    /s/ Kelly Hibbs                       

Name:    Kelly Hibbs
Title:    Vice President and Controller