Design 5120 Planum Fans

Leave it to Chicago Blower to take a perfectly reliable fan and offer a quieter, more efficient, less costly alternative. It's the new Design 5120 plenum fan that widens the performance envelope. It simply packs more power in a smaller footprint. The Design 5120 plenum is a rugged fan built to Chicago's industrial level of quality and long-term dependability. You can rely on the performance and durability of Chicago Airfoil Plenum Fans.


Plenum fans are specified for both field built-up units and factory built air handlers, and can be installed either horizontally or vertically. Applications include supply air, return air, and exhaust. Chicago now catalogs the widest selection of plenum fans.

Operating range

Maximum CFM 190,000
Maximum Static Pressure 18" wg
Maximum Temperature 150 degree Celcius
Fan Sizes 135 to 807


  • Alternate low noise model
  • 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
  • Slip fit inlet
  • Mounted belt guard - A/3T or A/3V
  • Motor and drive mounting
  • Inlet volume control
  • Wheel guard
  • Extended grease lines
  • Arrangement 3H height-saving brackets

Alternate Products

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  Design 62 Single Width Airfoil Fan Kits
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