The S-8500 impact door from PH Tech comes with an aluminum interlock, sill water bar and impact-laminated glass. It meets some of the highest standards in the industry, such as HVHZ criteria, FBC and TDI approval. The internal partitions in the door make for a strong, stable frame that won’t crack or warp. The door is built to withstand 140 mph winds. Add-on features include brick molds, jamb extensions, rebate flanges, jamb liners, groove covers and multi-chamber mainframes.