Intake Louver Fixed Drainable 54H x 54W

57 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 53 1/2 in Outside Width 53 1/2 in Rough Opening Height 54 in Rough Opening Width 54 in Louver Maximum Intake 11 422 cfm Maximum Exhaust 16 334 cfm Maximum Outside Width 56 1/2 in Minimum Outside Width 56 1/2 in Flange Width 1 1/2 in Free Area 11.1 sq ft Beginning Point of Water Penetration 1 031 fpm