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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.

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SLW Series

SINCE 1948.

SLW Series

Sales Sheet
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Triangle’s “SLW” Series agricultural fans are designed to move and replace stagnant air in your buildings while shedding any water or snow buildup on the exterior. The “SLW” Series is ideal for livestock applications, greenhouses or any building with exhaust or air circulation requirements. They are offered in direct or belt drive models.


  • Rugged heavy gauge galvanized housing, frame and blade
  • IWS series exhaust shutter on intake side are standard
  • Rolled inlet venturi for efficient air flow
  • Totally enclosed motors
  • Single-phase fans are factory wired 230 volt and provided with a power cord and a molded plug
  • Three-phase models available
  • Belt drive fans equipped with Triangle’s “X-Wing” low maintenance belt tensioner, which extends the life of the belt and motor

See full specifications for sizing and performance data

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