Series 7000 CW
Counterweighted Back Draft Damper


  • Ideal for installations requiring a robust back draft damper for adjustable pressure relief.

   Air leakage:

  • Air leakage through a 24" x 24" (610mm x 610mm) back draft damper does not exceed 4.32 cfm/ft² (21.95 l/s/m²) against 1" (0.25 kPa) w.g. differential static pressure at standard air.
  • Counterweights are fully adjustable and can be set to relieve air pressure differentials less than .01" w.g.
  • Counterweights are threaded and allow adjustments to be made with only one tool.
  • Brackets are slotted to allow precision slide adjustment of the weights.
  • TAMCO's aluminum construction provides a long, rust-free operational life.
  • Aluminum pivot points are over-sized for additional strength and durability.
  • Self-lubricating Celcon bearings ensure a maintenance-free and long-cycle life.
  • Silicone seals are provided as standard to ensure sealing longevity and remain flexible down to -40° F/C.
  • TAMCO's counterweighted back draft damper blades are securely linked via a large diameter aluminum linkage rod.
  • TAMCO’s linkage and bearing systems combine to provide durable, maintenance-free performance.
  • TAMCO's counterweighted back draft dampers are available in Front Flange, In Duct, or Rear Flange mounting types.
  • Series 7000 Counterweighted Back Draft Dampers allow mounting for horizontal air flow and both air flow up and down operation.

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