5" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps Our products are made out of high quality plastic and coated steel. Guaranteedlong life and durability. good compatibility with other ECOPRO VENT products good compatibility with other ECOPRO VENT products. 5 Inch steel backdraft damper with aluminum valve. long life and durability. Back Draft Shutter 100mm 4 Inch Backdraft Damper For Straight Or Flex Duct Bathroom Exhaust Fan Kitchen Hood Exhaust Fan And Different Dryer Fan Backflow Preventer Steel Damper With Aluminum Valve Flaps 4 Vent Blocker VENTS 6 in. KOM 150 U round back valve is especially designed to prevent back-draft. The spring loaded back-draft damper is manufactured of galvanized steel and... Perfect for heating, cooling or air conditioning - HVAC. Our products are made out of high quality plastic and coated steel. Duct Damper 4 Inch, Backdraft Damper One-Way Airflow Bathroom and kitchen air exhaust.
