Remote Drive Upblast Propeller Roof Exhaust Fans for Heat and Smoke Removal



UBSRD-HT and UBSRD-HT1 are available in 24, 30, 36, 42, 48, 54 and 60 inch sizes. Horsepower and CFM range to 52,000 CFM and 10HP. These units have been designed and tested for emergency heat and smoke removal. This design also lends itself to everyday non-emergency high capacity industrial and commercial roof exhaust applications. These fans successfully passed heat tests of 1000°F for fifteen (15) minutes, and 500°F for over four (4) hours by an independent testing agency. UBSRD-HT and UBSRD-HT1 exceed I.R.I (Industrial Risk Insurers) guidelines as «Power Ventilator for Smoke Control Systems.»

The heavy-gauge design allows for years of standard commercial use and the dependability required in a fire emergency. The upblast configuration exhausts heat and smoke high above the roof line aiding in the access and capabilities of firefighters. Unlike complete design dependence on gravity vents which are sometimes limited by air temperature and wind velocity, the UBSRD-HT and UBSRD-HT1 in conjunction with gravity vents, will more effectively remove smoke, hot air, and gases when used in a properly designed system. With the UBSRD-HT1 unit, in the event of electrical failure, the 165°F fusible link will activate the spring assisted damper doors to provide gravity ventilation.

  • Exhaust air up to 52,000 CFM in static pressure applications up to 3/4″ w.g.
  • Motor and drives are located outside of the exhaust airstream
  • Designed and tested for emergency heat and smoke removal
  • Successfully passed heat test of 1000°F for 15 minutes and 500°F for over 4 hours
  • Belt drives permit easy performance adjustments when needed
  • cULus 705 Listed

1-year fan housing warranty, 1-year motor warranty

(787) 653-7125
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