HVAC Duct Manual Volume Backdraft Damper with Adjustment Handle 1/4" Valves It has decades of history

It has decades of history and  YUCHAI has shipped over 10 million high quality diesel engines

Size: Port Outer Diameter: 127 mm/5 inch

35mm DIN Rail or Screw On

compressors

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HVAC Duct Manual Volume Backdraft Damper with Adjustment Handle 1/4" Valves It has decades of historyHVAC Duct Manual Volume Backdraft Dampers with Adjustment Handle Designed for demanding applications where durability and smooth operation are paramount, Ace Crew's Heavy Duty Manual Vent Dampers provides exceptional performance in even the toughest environments. Durable Material: The body is made from 22 gauge galvanized steel material. The flap blade is made from silicone which provides a tight seal. Constructed with sturdy components to ensure