Intake Louver, 12x12, DAYTON, Mfr# 45C669

12 In.H 12 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 11 1/2 in, Outside Width 11 1/2 in, Rough Opening Height 12 in, Rough Opening Width 12 in, Louver Maximum Intake 144 cfm, Maximum Exhaust 188 cfm, Maximum Outside Width 11 1/2 in, Minimum Outside Width 11 1/2 in, Flange Width Not Applicable, Free Area 0.4 sq ft, Beginning Point of Water Penetration 1,031 fpm