mcr Bora - unidirectional jet fan / reversible fan

Key details

Fire resistance classes:

  • class F300 – fire resistance 300°C/60 min.
  • class F400 – fire resistance 400°C/120 min.
  • class F200 – fire resistance 200°C/120 min.

Additional details

Certificate of constancy of performance 1488-CPR-0585/W for F400, F300, F200.

Functional properties according to EN 12101-3:2002+AC:2005.

Declaration of performance 001-01-CPR-2017.

Declaration of performance 002-00-CPR-2014.


mcr Bora jet fans are used in fire ventilation systems. They are intended for removing heat, smoke and combustion gases generated during fire. Due to their design the air or smoke is directed in a specific direction and moves with certain forced velocity.

These fans may also be used in comfort ventilation systems (BO version). The devices are suitable for indoor operation.

  • unidirectional or reversible making is available
  • certified accessories
  • available diameters: 290, 310, 350, 380, 400, 450, 500, 560 mm
  • draft force up to 92 N
  • rotation speeds n = 1 500; 3 000 RPM
  • nominal power 0.55 kW - 22 kW
  • IP 55 protection class

Detailed technical specifications are contained in the technical catalogue.

Making variants:

  • one-speed motors
  • two-speed motors
  • unidirectional
  • reversible

mcr Bora jet fans come with holders or installation braces as standard, depending on the size of fan and type of its housing. Depending on the type of operation (reversible or unidirectional), the fans are equipped in standard with deflectors or protective grills. The fans may be equipped with electric junction boxes and service switches adapted for operation in fire zone.