A1011 Carbon Steel Rectangular Grating Material Carbon Steel Material Grade A1011 Overall Height 1 1/2 in Overall Width 24 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 Serrated Weight 270 lb Application Driveway Drains Floor Drains Storm Water Drains Trench Drains Finish Galvanized Steel For Use Indoors/Outdoors Yes Rating @ Unsupported Length 2 132 lb/sq ft @ 2 ft Shape Rectangular Grating