Silex Windows has attained A440 Approval and achieved an A3/B7/C5. NASF Standard Commercial Window PG90.
Environmentally Friendly Fiberglass strings are made mostly of silica sand {sustainable natural resources}, the lineal manufacture process consume the least embodied energy when compared to other common window frame materials such as aluminum and PVC.
low thermal conductivity / energy efficient Pultruded fiberglass profile insulates better than any of the traditional window and door materials. The thermal conductibility ratio is 500x less than aluminum. Insulating the frame and sash components reduces the conductivity even further, slowing for the creation of some of the most energy efficient window and door systems.
low maintenance Fiberglass is the most stable material; and virtually unlimited colors and an interior wood veneers. The maintenance-free frames stay true to form due to strength of materials. No need for sanding, painting, or staining.