Weatherhood, For Blade Diameter 20 in, For Cut-Out Height 22 1/2 in, For Cut-Out Width 22 1/2 in, For Cut-Out Height (With Wall Collar) 25 5/8 in, For Cut-Out Width (With Wall Collar) 25 5/8 in, Overall Height 24 1/4 in, Overall Width 24 1/4 in,...