A1011 Carbon Steel Square Grating, Material Carbon Steel, Material Grade A1011, Overall Height 1 1/2 in, Overall Width 36 in, Overall Length 36 in, Cross Bar Spacing 4 in, Bearing Bar Spacing 1 3/16 in, Bearing Bar Thickness 3/16 in, Top Surface Serrated, Weight 98 lb, Application Driveway Drains, Floor Drains, Storm Water Drains, Trench Drains, Finish Black Painted Steel, For Use Indoors/Outdoors Yes, Rating @ Unsupported Length 2,132 lb/sq ft @ 2 ft, Shape Square Grating