Dynair REV centrifugal roof fans with vertical discharge

This  series of centrifugal roof fans were primarily designed for easy ventilation of residential, commercial or industrial buildings,  suitable for both direct and ducted extraction. They can exhaust clean air up to 40°C. The single- or three-phase external rotor motor allows complete speed regulation, via the additional electronic regulator. The three-phase version also features the ability to choose between delta/star configuration, allowing instantaneous switching between two different operating speeds. Available in multiple different sizes, ranging from 650 to 980mm in diameter. Also available in a horizontal discharge configuration (REA series).

Airflow: up to 3500m3/h
Max static pressure buildup: 420 Pa
Max operating temperature: 40°C

This product complies with the European Union’s ecodesign directive.
ErP Directive compliant fans




  • Mounting plate made from galvanized steel.
  • Protection guard made from drawn steel rods, manufactured in compliance with UNI 10615:11997 regulations.
  • Low noise, highly efficient backward curved blade impeller made from galvanized steel.
  • Single- or three-phase external rotor motor, tropycalized, equipped with internal thermal protection and IP44 grade ingress protection, with the 25 model featuring Class B, the 31-40 models Class F insulation.
  • Outer deflector made from ABS plastic.


  • Backdraught gravity shutter
  • Silencers (GR)
  • Counter base to be walled up (CB)
  • Mounting plate for corrugated roof coverings(BA)
  • Service switch
  • Speed regulators
  • Support base with noise and vibration dampening(PB)
  • Flat protection guard (CCr)

For further details, feel free to contact KOMPEL Kft.