Dynair Box-D Direct drive double inlet box fans

The BOX-D series of fans are designed specifically for air extraction, supply, or filtration with remarkably low noise operation. Their main characteristic is their plenum, which is lined with acuoustic insulation material, making these fans particularly suitable for residential, or urban applications, such as; apartmens, houses, bars, restaurants, schools and offices, as well as industrial sites, where fan noise would be a problem. The blower consists of a double inlet forward curved centrifugal fan, paired with a built-in motor, all inside the insulated casing. The BOX-D series of fans are suited for operation between -20°C and +40°C. Available in 7 different sizes.

Airflow: up to 8500m3/h

Max total pressure rise: 540Pa

Max operating temperature: 40°C

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




  • Box frame made from extruded aluminium profile, with removable side panels made out of galvanized steel sheet, making for an aesthetically pleasing appearance.
  • Weatherproof galvanized steel cover.
  • Acoustically lined panels in self-extinguishing techno-polymer.
  • Double inlet, forward curved blower,with a built-in direct drive, asynchronous single-, or three-phase motor, with IP20 grade protection and class F insulation.
  • Weatherproof upper cover with holes suitable for lifting hooks.


  • Rainproof outlet with guard
  • Support feet
  • Replacable filter (standard version comes with an EU4 class polyester filter with 90.1% efficiency)

Available upon request:

  • Double layer insulation (13mm thick).
  • Round inlet/outlet connector version (BOX-DR).

For further details, feel free to contact KOMPEL Kft.