The Fibergrate Fiberglass Bar Stair Tread is a heavy duty, corrosion resistant stair tread made of molded fiberglass reinforced plastic with a meniscus bar surface. It has a width of 24 inches, length of 36 inches, thickness of 1.5 inches, and weight of 11 lbs. The tread features a slip resistant surface and is designed for industrial and commercial use on metal pan stairs. It meets OSHA and ADA requirements. The bar surface provides maximum slip resistance.