No Loss Stacks


No Loss Stacks are designed to create a low resistance exhaust path for air exiting the fan while preventing the intrusion of excessive rainwater. The design uses a double pipe construction and an off-set alignment of those pipes. See diagram to the left.

  • Offer a low resistance exit port
  • Prevents rainwater intrusion
  • Minimizes back pressure resistance
  • Maximizes fan efficiency 

Available in Flange-Connect and Clamp-Connect options.