Smooth, sleek grill hides screws for a finished look. Can rotate 360 degree for optimum airflow control. Airflow adjustable. Direct OEM replacement Won't fade discolor, rust, or peel Fits 4" flex ducts. Cutout Dim: 4."

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov