roof ventilators


Centrifugal Wall Ventilator,
Direct Drive


The ATDW Centrifugal Wall Exhauster is designed for horizontal wall-mounted configurations exhausting clean air for applications that require the exhausted air to be moved up and away from the building. The ATDW 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)

  • 8.38 to 18.25 inches (215 mm to 465 mm)


  • Airflow to 3,865 CFM (6,600 m3/hour)
  • Static pressure to 1.5 inches w.g. (370 Pa)

Brochures & Flyers

Installation Manual