GSI Building Material and Supplies Dealers GSI Building Material and Supplies Dealers Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Continental Door Company _ 12718 E Indiana AveSpokane, WA 99216 (509) 921-2260 Member Since: 2023 Learn More | Visit Site Dupree Building Specialties _ 1035 E Cataldo AveSpokane, WA 99202 (509) 484-2000 Member Since: 1986 Learn More | Visit Site If your business isn't here, contact us today to get listed!