1. Single glazed 2. Double glazed - minimum glass thickness is 3mm/3mm and increases with size of unit in accordance with the Building Code requirements. 3. Triple glazed - options: Low E coatings / Argon gas filled / Krypton gas filled / obscure, tinted, tempered or laminated 4. Spacer bar options include: champagne anodized, black anodized, plain mill aluminum or stainless steel. Spacer bars have cut corners to create 90 degree precision angles. Optional Super Spacer available on request. 5. Insulated glass units consist of a dual seal process available in silicone or polyurethane. Installation of units includes C.S.A. approved closed cell foam tape on both sides of the units, providing expansion and contraction to maximize life span. Additional sealing processes are provided for high wind and rain conditions.