Robust Materials: The body of the HVAC Duct Manual Volume Damper is made from stainless steel material and the flap blade is made from aluminum, which is wear resistance and can be used for a long time.
Function: Airflow Ducting Backdraft Damperhelp regulate the amount of air that passes through the ducts, allowing you to maintain optimal airflow levels for heating, cooling and ventilation purposes.
Perfect Design: Air Flow Regulator features a rubber seal ring inside, which can prevent the air duct valve from leaking when it is closed
