• Big D Metalworks of Texas

• Bilt Best Windows

• Blaine Window Hardware

• Boise Moulding & Lumber Co. (BML)

• Brothers Custom Windows & Doors, Inc.

• Brunsell Lumber & Millwork

• Buildex, Inc.

• Burns: E.L. Burns Co.

• C M Security Group Inc.

• CPI Sales

• CW Ohio

• California Glass Bending Corporation

• California Stainless Mfg. Inc.

• California Wire Products

• Cambridge, Inc.

• Capitol Windows & Doors

• Century Manufacturing, Inc. (Window Technologies, Inc.)

• Cesar Color

• Chelsea Building Products

• Chicago Bullet Proof Systems

• Circle Redmont, Inc.

• Classic Windows, Inc.

• Coastal Screen Co.

• Columbia Commercial Building Products

• Comfort Line Inc.

• Concrete Chemicals