roof ventilators


Centrifugal Roof Ventilator, Downblast, Belt Driven


The ACX centrifugal roof ventilator is designed for roof mounted exhaust of relatively clean air in a wide variety of industrial and commercial applications. The ACX features a high efficiency, non-overloading backward inclined centrifugal impeller precisely matched to a deep spun venturi. The impeller, motor and drive assembly are completely isolated from the fan supports by rubber isolators to reduce transmission of noise and vibration. The top cap also provides complete protection for the motor and drive assembly, while allowing quick access to these components without the need for tools.

Sizes (impeller diameters)

  • 8.5 to 50.5 inches (220 mm to 1,285 mm)


  • Airflow to 28,700 CFM (48,800 m3/hour)
  • Static pressure to 3.25 inches w.g. (810 Pa)

Installation Manual

  • Centrifugal Powered Roof Ventilators – IM-121
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