Metal Building Daylighting Panels by Crane Composites, Inc. are fiberglass reinforced plastic (frp) composites made from fiberglass reinforcements in a plastic (polymer) matrix. By reinforcing the plastic matrix, a wide variety of physical strengths and properties can be designed into the FRP composite. Panels can be used for roof, wall, and ridge applications in Farm/Agriculture or Metal Building. They let natural daylight and passive solar heat in, reducing your energy costs, while keeping the weather out. The panels also stand up to tough conditions and will resist heat, cracking, crazing, and harsh chemicals.