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Additional Resources

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Frequently Asked Questions View all FAQs
How do you order the correct replacement parts?

Before ordering replacement parts, make sure you have the fan model and serial number.

Where can I find instructions to wire a motor on my fan?

The nameplate of the motor includes a wiring diagram. Wiring diagrams can also be found beneath the motor image in our Buy Parts section. Simply click the wiring diagram icon to view it.

Can I install a thermostat?

Yes, but only if the thermostat has a simple on/off operation. Please note: if the thermostat varies the amount of voltage delivered, it will damage the motor and void the warranty.

Can I install my whole house fan vertically?

Comfort Cooler (CC) series whole-house fans may be mounted vertically, however, the AS and CSS shutters will not function properly in the vertical position. We do not carry a ceiling shutter for vertical installation. Vertical installation instructions.

Quality Products

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TAB Tube Axial

SINCE 1948.

TAB Tube Axial

Triangle’s TAB Tube Axial belt drive fans employ an all-welded construction and are designed and engineered to deliver excellent airflow. TAB belt drive fans can be utilized for supply or exhaust applications.


  • Belt drive
  • Standard sizes 20,” 24,” 30,” 36,” 42” and 48” inside diameter
  • Custom sizes available— please consult factory for options and availability
  • Motor, belt drive & bearings are isolated from the airstream
  • For corrosive and contaminated airstream applications
  • CFM ranges from 5,730 to 57,100
  • Intake or exhaust systems
  • All welded heavy gauge steel construction
  • Standard finish: durable gray polyester powder coat

See full specifications for sizing and performance data

View Full Specs

Hazardous Location Models

Hazardous location models are made to order and are not returnable.

  • No wiring
  • Non-sparking aluminum blades
  • Stationary motor mounts
  • Belt drive: single speed, Div. I, Class I, Group D & Class II, Groups F & G