Dampers, Shutters and Louvers → Model 2410 Canarm Ltd. brand 4" Wide (Fixed Blade) Fresh Air Architectural Wall Louver - 640 (FPM) Feet Per Minute Velocity Rating (Beginning Point of Water Penetration)
Model 2410 Canarm Ltd. brand 4" Wide (Fixed Blade) Fresh Air Architectural Wall Louver - 640 (FPM) Feet Per Minute Velocity Rating (Beginning Point of Water Penetration)