The 401M series is a 1 way air register used for wall or ceiling openings. The stamped curved blades allow for one way air deflection. Our Smooth glide technology ensures rattle free and quiet airflow from your central air system. Smooth glide also provides for smooth opening and closing of your back dampers. Our high quality product will ensure years of continuous use. Product Features: High quality steel, white powder coat finish, damper to control the amount and direction of airflow.Wall or ceiling register controls airflow into a roomMade of high quality steelWhite powder coat finishLouvers control the amount and direction of airflow