A1011 Carbon Steel Rectangular Grating Material Carbon Steel Material Grade A1011 Overall Height 1 in Overall Width 36 in Overall Length 12 ft Cross Bar Spacing 4 in Bearing Bar Spacing 1 3/16 in Bearing Bar Thickness 3/16 in Top Surface Smooth Weight 266 lb Application Driveway Drains Floor Drains Storm Water Drains Trench Drains Finish Black Painted Steel For Use Indoors/Outdoors Yes Rating @ Unsupported Length 947 lb/sq ft @ 2 ft Shape Rectangular Grating