The 103M series is a 3 way air register used for wall or ceiling openings. The stamped face allows for three way air deflection. Smooth glide technology ensures rattle free and quiet airflow from your central air system as well as smooth opening and closing of your back dampers. This product features: high quality steel, white powder coat finish & smooth glide multi-shutter damper. Louvers control the amount and direction of airflow. Duct opening measurement: width x height.