Unbranded DDRD-08 Relief Damper sku-18130658122 782690691705

This Unbranded DDRD-08 8-inch barometric relief damper is listed under HVAC Ducting and Ventilation as sku-18130658122, UPC 782690691705. Its adjustable weighted arm controls airflow resistance, and its arms are longer than those on standard models. Extra weights can be added for further adjustment. It is intended for residential and light commercial zoning systems 5 tons and under. Starting collars allow installation with flexible or rigid duct systems.