Attic Ladder, Material Aluminum, Ceiling Height Range 7 ft 11 in to 10 ft 3 in, Load Capacity 375 lb, ANSI Type IAA, Series Elite II, Rough Opening 22-1/2 in x 54 in, Swing Clearance 74 in, Landing Space 69 5/16 in, Step Width 12 in, Step Depth 3 1/4 in, Net Weight 45.0 lb, Insulated No, Attic Ladder Closure Gas Cylinder, Rung/Step Spacing 12 in