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SQA Square Fans
We are proud to be one of the world's leading centrifugal fan suppliers and our SQA Square Fan is our pride & joy. The SQA Square Fan is Chicago's most popular fan because it fulfills most commercial, and general industrial air moving needs. With its airfoil wheel and square housing design, the SQA is efficient, economical and versatile. It is also quickly available through Chicago's Quick Ship Fan program. "Packaged" fans, those furnished with motor, V-belt drive, belt guard and other options, are factory aligned, run tested and shipped ready to install. By eliminating jobsite assembly, the packaged SQA fan can substantially reduce overall installation cost.
Product Bulletin: SQA
Operation & Maintenance Manual: Industrial Centrifugal Fans
SQA Square Fan Applications
Any supply air or clean exhaust application is ideal for Chicago's SQA airfoil fan. For dirty air or dusty air, the SQB version with backward inclined blades is recommended. The SQA Square Fan is also suited for high temperature gasses and air as well as for air conveying applications.
Fan Options
  • Housing drain
  • Quick clamp door
  • Spark resistant construction
  • Inlet screen
  • Shaft seal
  • Slip fit inlet
  • Punched flanged inlet
  • Punched flanged outlet
  • Inlet volume control
  • Cast aluminum wheel
  • Percentage width add
  • Rugged housing
  • Rigid motor base
  • Four discharge positions
  • Streamlined inlet
  • Factory run tested
  • AMCA certified performance
  • Sizes: 8-3/4 to 30
  • Volumes to 27,386 CFM
  • Pressures to 22” wg
  • Temperatures to 180°F
Alternate Fan Designs
For Greater CFM
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