Weatherhood For Blade Diameter 60 in For Cut-Out Height 62 1/2 in For Cut-Out Width 62 1/2 in For Cut-Out Height (With Wall Collar) 67 3/4 in For Cut-Out Width (With Wall Collar) 67 3/4 in Overall Height 66 1/4 in Overall Width 66 1/4 in Overall Depth 48 1/2 in Material Steel Thickness 18 ga Finish Galvanized