Intake Louver 54x54

54 In.H 54 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Hat Channel Frame Depth 4 in Mounting Style Recess 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 6 511 cfm Maximum Exhaust 8 500 cfm Maximum Outside Width 53 1/2 in Minimum Outside Width 53 1/2 in Flange Width Not Applicable Free Area 11.1 sq ft Beginning Point of Water Penetration 1 031 fpm