A1011 Carbon Steel Rectangular Grating Material Carbon Steel Material Grade A1011 Overall Height 1 1/4 in Overall Width 36 in Overall Length 12 ft Cross Bar Spacing 4 in Bearing Bar Spacing 15/16 in Bearing Bar Thickness 3/16 in Top Surface Smooth Weight 396 lb Application Driveway Drains Floor Drains Storm Water Drains Trench Drains Finish Galvanized Steel For Use Indoors/Outdoors Yes Rating @ Unsupported Length 1 480 lb/sq ft @ 2 ft Shape Rectangular Grating