Bar Grating Stainless Steel 304 Square 36 in Overall Length 36 in Overall Width Top Surface Serrated Bearing Bar Spacing 1.19 in Cross Bar Spacing 4 in Weight 9 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 0.168 in @ 3 ft For Use Indoors/Outdoors Yes Includes Mounting Hardware No Load Capacity 100 lb 1.25 in Overall Height