Design 51 Planum Fans

Chicago's Plenum Fan offers a practical, economical design alternative for air handling and conditioning systems. It features an unhoused true airfoil bladed wheel that installs directly within the plenum, thereby eliminating the downstream discharge. The fan can be installed either horizontally or vertically.


PWithout the conventional scroll, the Plenum Fan provides the required performance in less space. It is therefore ideal for retrofit applications where system performance needs to be expanded and more space is not available. For either supply fan, return fan or exhaust fan applications, rely on the performance and durability of Chicago Airfoil Plenum Fans.

Operating range

Maximum CFM 158,000
Maximum Static Pressure 9 1/2" wg
Maximum Temperature 140 degree Celcius
Fan Sizes 135 to 807


  • High efficiency hollow bladed airfoil wheel
  • Spun steel wheel cone optimizes air flow
  • Horizontal or vertical installation
  • AMCA Certified Performance for air and sound
  • Unhoused wheel installs within the plenum to eliminate downstream discharge
  • Stable air flow over entire performance range
  • Rugged industrial strength frame
  • Integral lifting hooks


  • Inlet screen
  • Mounted belt guard - A/3T or A/3V
  • Motor and drive mounting
  • Inlet volume control
  • Wheel guard
  • Extended grease lines

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