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Inline Centrifugal Exhaust Fans

Inline Centrifugal Exhaust Fans

Each of our HEE-Duall brand Inline Centrifugal Exhaust Fans are custom engineered to deliver maximum performance, efficiency and durability, even in the harshest applications. We are a leading brand for corrosion resistant fans for industrial and municipal applications, which are manufactured from fiberglass reinforced plastic (FRP) materials and glass, providing years of trouble-free service and value. Our fans also offer a streamlined inlet cone, outlet recovery vanes plus clockwise and counterclockwise rotation.


  • Low Total Cost of Ownership
  • High value and low maintenance
    • Premium and quality materials preserve the value in your fans and minimize the total cost of operation
    • Innovative airfoil wheel design delivers the highest level of performance and economical operation available in the industry
  • High reliability 
    • Our inline centrifugal fans exceed ASTM (American Society for Testing and Materials) specifications



  • Capacities up to 80,000 CFM at static pressures to 12 inch WC
  • Clockwise and counterclockwise rotation (interchangeable housing)
  • Streamlined inlet cone
  • Outlet recovery vanes