7 Inch Metal Backdraft Damper, Airflow Backflow Preventer Vent Draft Blocker Duct Connector for Kitchen Bathroom Exhaust Fan HVAC, Red Plugs with Hex Drive Cable Length: 35cm

Cable Length: 35cm

Designed with larger numbers of cutting edges than carbide hole saws

Adjustable flow range: 0-70L/H

Total Size : 31

Dry travertine terrazzo polishing

7 Inch Metal Backdraft Damper, Airflow Backflow Preventer Vent Draft Blocker Duct Connector for Kitchen Bathroom Exhaust Fan HVAC, Red Plugs with Hex Drive Cable Length: 35cmThe backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Widely used in dryers, extractors or range hoods, and other HVAC applications. You can install it in your home, kitchen, bathroom, office or living room which needs a ventilation system. Specification Color: Red Material: Iron Outer Diameter of Interface: 175 mm