Intake Louver Fixed Drainable 12H x 12W

15 In.H 15 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Flanged Frame Depth 4 in Mounting Style Surface Mount Outside Height 11 1/2 in Outside Width 11 1/2 in Rough Opening Height 12 in Rough Opening Width 12 in Louver Maximum Intake 310 cfm Maximum Exhaust 443 cfm Maximum Outside Width 14 1/2 in Minimum Outside Width 14 1/2 in Flange Width 1 1/2 in Free Area 0.4 sq ft Beginning Point of Water Penetration 1 031 fpm Maximum Air Velocity 3500 fpm