Columbia markets to a 10 state area in the central United States to building contractors, building materials wholesalers and glass and door wholesalers in the residential and light commercial markets.

• See also:
• Masterformat 2004
• 08 11 00 - Metal Doors and Frames
• 08 11 63 - Metal Screen and Storm Doors and Frames
• 08 11 66 - Metal Screen Doors and Frames
• 08 11 69 - Metal Storm Doors and Frames
• 08 51 13 - Aluminum Windows
• 08 53 00 - Plastic Windows
• 10 73 00 - Protective Covers
• 10 73 13 - Awnings
• 10 73 16 - Canopies
• 10 73 23 - Car Shelters
• 10 73 26 - Walkway Coverings
• Masterformat 1995
• 08100 - Metal Doors and Frames
• 08180 - Metal Screen and Storm Doors
• 08520 - Aluminum Windows
• 08560 - Plastic Windows
• 10530 - Protective Covers