8 Roud Damper

Product Description: An 8-inch round damper designed for HVAC duct systems to regulate and balance airflow. Constructed for durability and reliable performance, it can be installed in round ductwork to manually adjust air volume and improve system efficiency. Suitable for residential and light commercial ventilation applications. If "PC/SR" refers to a specific manufacturer code or damper type used by your supplier, I can make the description more precise.