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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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VAD Vane Axial

SINCE 1948.

VAD Vane Axial

Triangle’s VAD Vane Axial direct drive fans are designed for exhausting hazardous atmospheres and corrosive fumes and are designed with post rotative straightening vanes to boost the fan’s capacity to provide low-cost CFM at the highest efficiency. Applications include exhaust for paint spray booths, mixing rooms, and many other industrial ventilation requirements.


  • Direct drive
  • Standard sizes are 24,” 30,” 36,” 42” and 48” inside diameter
  • Custom sizes available— consult factory for options and availability
  • Intake or exhaust systems
  • Cast aluminum airfoil blades
  • All welded heavy gauge steel construction
  • Standard Finish: durable gray polyester powder coat
  • Split tapered standard drive hubs
  • Motor is in the airstream

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
  • Motor: single speed, Div, I, Class I, Group D & Class II, Groups F & G