Weatherhood, For Blade Diameter 48 in, For -Out Height 50 1/2 in, For -Out Width 50 1/2 in, For -Out Height (With Wall Collar) 55 5/8 in, For -Out Width (With Wall Collar) 55 5/8 in, Overall Height 54 1/4 in, Overall Width 54 1/4 in, Overall Depth 28 in, Material Steel, Thickness 18 ga, Finish Galvanized