roof ventilators

ATB

Centrifugal Roof Ventilator,
Upblast, Belt Driven

Application

The ATB is designed for roof mounted exhaust of relatively clean air for applications that require the exhausted air to be moved up and away from the building and where re-entry into the building supply air is possible. The ATB features a high efficiency, non-overloading backward inclined centrifugal wheel precisely matched to a deep spun venturi. The wheel, 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 (wheel diameters)

  • 12.25 to 49.21 inches (315 mm to 1,250 mm)

Performance

  • Airflow to 29,100 CFM (49,400 m3/hour)
  • Static pressure to 3.25 inches w.g. (810 Pa)

Installation Manual

  • Centrifugal Powered Roof Ventilators – IM-121
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