Aluminum Supply (Intake) Wall Shutter 20" - CWV-20x20

Supply (intake) wall shutter - the model cwv is a rear flanged gravity supply (intake) wall shutter. the frame and blades are mill finish aluminum with a galvanized reinforcement strip on each blade for added strength and counter balancing efficiency. the blades have a felt seal on the leading edge for quite closing and better protection from the weather. ideal for use with belt-driven centrifugal wall ventilators. recommended for vertical mount supply (intake) only. the blades will pivot at the bottom and fall with gravity to open. spring-assist to close. made in the usa.