| Business | Phone |
| Allied Building Products Corp 20021 144th Ave Ne, Seattle 98115 | (206) 525-0137 |
| American Building Materials 3667 1st Ave S, Seattle 98134 | (206) 682-3747 |
| Armstrong World Industries Inc 5104 46th Ave S, Seattle 98118 | (206) 721-3129 |
| Cochrane Northwest Inc 3800 1st Ave S, Seattle 98134 | (206) 467-9167 |
| Dorse Architectural Inc 3909 E Madison St, Seattle 98112 | (206) 633-1005 |
| Dunn Lumber Co 11455 Des Moines Memorial Dr, Seattle 98168 | (206) 241-0409 |
| Environmental Home Ctr 1724 4th Ave S, Seattle 98134 | (206) 682-7332 |
| George S Schuster Co Inc 12 S Idaho St, Seattle 98134 | (206) 623-1201 |
| Home Builders' Ctr 1110 W Nickerson St, Seattle 98119 | (206) 283-6060 |
| Impac Co Inc 5059 Sw Admiral Way, Seattle 98116 | (206) 937-5567 |