• AFM R-Control/CushPack

• Advanced Foam Plastics Inc.

• Alamo Forest Products

• Alpine Engineered Products, Inc.

• Amerimax Building Products, Inc.

• Anderson Truss

• Anthony Forest Products

• Ashland Inc.

• Automated Building Components Inc.

• Blue Ox Logcrafters

• Brunsell Lumber & Millwork

• Bullock, Smith & Partners, Inc.

• Canadian Wood Council

• Carolina Truss Systems

• Cascade Mfg. Co.

• Cedar Homes

• Central Alberta Truss Limited

• ClearSpan Modular Structures

• Coleman-Spohn Corporation

• Crissey Fowler Lumber Co.

• Cushing Truss Mfg.

• Davis Frame Co.

• Fermco Industries

• Filler King Co.

• Gunnison Garage Door, Inc.

• Hayes-Howell

• Hughes Roof Truss Co. Ltd.

• IP Wood

• International Homes of Cedar, Inc.

• International Paper

• Joaquin Mfg. Corporation

• Kent Trusses

• Kent Trusses Ltd.

• Lamboo® Incorporated

• Lindal Cedar Homes, Inc.

• Louisiana Pacific Corporation

• Luna Design Associates, Inc.

• Marshall Truss Systems

• Midwest Hardwood Corporation

• Mitek Canada Inc.

• Mithun Partners, Inc.

• Mountain Timber Homes, Inc.

• Ontario Wood Truss Fabricators Association

• Permapost Products Co.

• Phoenix Timber Factory

• Premier Building Systems

• Prokit Structural Inc.

• Quality Coatings

• Rigid Component Systems

• Roof Domes LLC

• SIP Supply, LLC/Greenix Panels

• Sawtooth Wood Products & Equipment Co.

• Shelter Systems Corp.

• Sierra Stair Works, Inc.

• Southern Components, Inc.

• Span Truss Systems Ltd.

• Standard Structures

• Stone International, Inc.

• Structural Wood Products

• T D Snow & Son Inc.

• Tabu S.p.A.

• The American Institute of Timber Construction (AITC)

• Thomas Manufacturing, Inc.

• Thorne's Manufactured Homes

• Timber Truss Housing Systems Inc.

• Timberpeg

• TrimJoist

• Trus Joist MacMillan

• Truss Components, Inc.

• Unadilla Laminated Products

• Unit Structures Systems

• Universal Timber Structures

• Vermont Timber Works Inc.

• Victoria Truss Ltd.

• Warner Shelter Systems Limited

• Western Archrib

• Wheeler Consolidated

• Willamette Industries (Weyerhaeuser Company)

• William L. Myles & Sons

• Wood Structures Inc

• Woodhouse, The Timber Frame Company

• Woodmaster Foundations