Dynair BOX-T ATEX Belt driven double inlet box fans

The BOX-T ATX series of fans are particularly designed for industrial applications, where low noise air extraction is necessary. Thanks to their unique construction, these fans are ideally installed in industrial plants compliant with ATEX Directive 99/92/CE and built-in compliance with 94/9/CE and 2014/34/EU.  The low noise level is achieved thanks by the panels lined with thick acoustic insulation material, that allows a remarkable amount of noise reduction, inevitably generated by the fan. The blower consists of a double inlet, forward curved centrifugal fan, connected to the motor with belts and pulleys. The BOX-T ATX fans are designed for installation in ATEX certified plants, in cat.3 zone 2 and zone 2-22(3G), conveying clean air between -20°C and +40°C.




  • Box frame made from extruded aluminium profiles, with removable double layer side panels made out of galvanized steel sheet.
  • The insides of the panels are lined with self-extinguishing techno-polymer.
  • Double inlet centrifugal fans with forward curved blades, driven by trapezoidal belts, through adjustable pulleys. The fan and motor are supported by a single base frame, separate and insulated from the main structure via anti-vibration mounts and a flexible coupler on the outlet side.
  • Asynchronous three-phase ATEX motors, for explosive environments category G group II, thermal class T4, flame protection EX D. Equipped with IP55 grade protection and class F insulation, CE marked, compliant with the following standards: IEC 60034, IEC 60072, EMC 2014/30/UE, LVD 2014/35/UE. Suitable for continuous „S1” operation at constant load. Available in B3 or B5 standard shapes, with ATEX certification by the pertaining authorities.


  • Weatherproof cover
  • Support feet
  • Outlet terminal with guard
  • Setting shutter
  • Serivce switch IP65
  • ATEX service switch

Available upon request:

  • Three-phase, double polarity ATEX motor version (4/6 poles), with same characteristics as the standard version.
  • Aynchronous, single-phase ATEX motors, with same characteristics as the standard version.
  • ATEX II3GD certified version.
  • Aluminium panels.
  • Double layered panels in 23 or 50mm thickness.