Bar Grating, Stainless Steel, 304, Rectangle, 4 ft Overall Length, 36 in Overall Width, Top Surface Serrated, Bearing Bar Spacing 1.19 in, Cross Bar Spacing 4 in, Weight 7 lb/sq ft, Standards ASTM A-167, Application Walkways, Catwalks, Platforms, Stairways, Mezzanine Floors, Waste Water Treatement Plants, Bearing Bar Thickness 0.188 in, Deflection @ Unsupported Length 0.224 in @ 3 ft, For Use Indoors/Outdoors Yes, Includes Mounting Hardware No, Load Capacity 100 lb, 1 in Overall Height