Intake Louver Fixed Drainable 54H x 24W

57 In.H 27 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Flanged Frame Depth 4 in Mounting Style Surface Mount Outside Height 53 1/2 in Outside Width 23 1/2 in Rough Opening Height 54 in Rough Opening Width 24 in Louver Maximum Intake 4 703 cfm Maximum Exhaust 6 726 cfm Maximum Outside Width 26 1/2 in Minimum Outside Width 26 1/2 in Flange Width 1 1/2 in Free Area 4.3 sq ft Beginning Point of Water Penetration 1 031 fpm Maximum Air Velocity 3500 fpm