Intake Louver, Fixed, Galvannealed Steel, DAYTON, Mfr# 53DR09

42 In.H 42 In.W Non-Drnbl GSteel Modulr Louver, Louver Type Stationary Blade, Frame Type Hat Channel, Frame Depth 4 in, Mounting Style Flush Mount, Outside Height 41 1/2 in, Outside Width 41 1/2 in, Rough Opening Height 42 in, Rough Opening Width 42 in, Louver Maximum Intake 3,876 cfm, Maximum Exhaust 5,543 cfm, Maximum Outside Width 41 1/2 in, Minimum Outside Width 41 1/2 in, Flange Width Not Applicable, Free Area 5.4 sq ft, Beginning Point of Water Penetration 709 fpm