The Fibergrate Fiberglass Molded Grating is a corrosion resistant, high strength to weight ratio grating made of a fiberglass reinforced plastic (FRP) composite. It has a matte gray finish and features a square mesh pattern with 1-1/2" x 3/8" openings. This grating is designed for use in corrosive environments and has a flame spread rating of 25 or less per ASTM E-84. With its lightweight, high strength construction, it is easy to fabricate on site and suitable for a variety of industrial platforms, walkways, stairs and more. This grating comes in a standard size of 4' x 8' at a thickness of 1-1/2".