Intake Louver Fixed Drainable 30H x 54W

33 In.H 57 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Flanged Frame Depth 4 in Mounting Style Surface Mount Outside Height 29 1/2 in Outside Width 53 1/2 in Rough Opening Height 30 in Rough Opening Width 54 in Louver Maximum Intake 6 150 cfm Maximum Exhaust 8 795 cfm Maximum Outside Width 56 1/2 in Minimum Outside Width 56 1/2 in Flange Width 1 1/2 in Free Area 5.9 sq ft Beginning Point of Water Penetration 1 031 fpm Maximum Air Velocity 3500 fpm