A1011 Carbon Steel Rectangular Grating Material Carbon Steel Material Grade A1011 Overall Height 1 1/2 in Overall Width 36 in Overall Length 6 ft Cross Bar Spacing 4 in Bearing Bar Spacing 1 3/16 in Bearing Bar Thickness 1/4 in Top Surface Smooth Weight 257 lb Application Driveway Drains Floor Drains Storm Water Drains Trench Drains Finish Black Painted Steel For Use Indoors/Outdoors Yes Shape Rectangular Grating Standards ISO 9001 2015 System of Measurement Inch