The TriSys three-frame system offers premium features from finishing and assembly to overall design and performance. The system features a millwork-inspired, homeowner-preferred profile as well as a clean aesthetic design with no screw hole plugs. The frame’s new FiberMate material has the best paint and stains adhesion rating possible and allows the frame to have a dark finish without the risk of deformation due to heat. No special primer or preparation is needed. Assembly and service are made easy with a number of innovative features. The frame system screws together easily and includes a third piece that snaps on, eliminating the need for screw hole plugs and allowing for easier finishing and a more visibly appealing and cleaner aesthetic. The pin alignment system ensures rapid and accurate alignment of frames and the precision-applied dry glaze seal will not squeeze out. These features allow for easy adjustments and removal, resulting in less time spent on field replacements.