... % and 50% less than aluminum and steel, providing greater dimensional stability.DurabilitySuperior durability to Stainless Steel, Aluminum, and Galvanized Gratings, especially in ... , Stairs, Gully Covers, Jetties, flooring, etc. Fiberglass Reinforced Plastic Grating provides the following advantages:SafetyACME fiberglass grating is recommended when corrosion protection and safety ...