The 210VM 08 in. x 08 in. is a 8 in. x 8 in. 1-way air register used for wall or ceiling openings. The adjustable vertical front bars allow for 1-way air flow. 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.Wall or ceiling registers controls airflow into a roomDampers control the amount and direction of airflowWhite powder coat finishMade from high quality steelSmoothGlide damper