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Jetstream car park impulse jet fan

Jetstream is an impulse fan designed for the ventilation of car parks and underground service areas, so as both to reduce levels of polluted air and to assist with the extraction of smoke in the event of a fire.

The fans use tunnel ventilation technology to eliminate the need for costly and bulky ductwork. Compared to ductwork systems, this may save car-parking spaces, reduce running costs and noise, and make the car park a lighter, less cluttered environment.


High velocity powered car park induction ventilation unit, for directing exhaust fumes (in day to day mode) and smoke in a controlled manner towards the main extract positions of a car park or underground service area.

Comprising an axial fan with inlet and discharge attenuators with outlet diffusers enabling flush fit with the underside of the car park ceiling.


  • Type 315J - 315mm diameter fan (uni-directional)
  • Type 315J - 315mm diameter fan (reversible)
  • Type 400J - 400mm diameter fan (uni-directional)
  • Type 400J - 400mm diameter fan (reversible)

Performance / electrical characteristics


  • Single speed DOL motor suitable for inverter speed control, IP55 protection
  • Two speed tap wound motor (full and half speed), IP55 protection

Motors supplied as standard with a IP65 lockable fire rated isolator or optionally with a fitted IP55 terminal box.


  • Pre-galvanised sheet (standard)
  • Polyester powder coating to any RAL colour 

Fire performance

  • F300 - continuous operation for one hour at 300ºC

Sound emissions

CIBSE Guide Volume A: 1999, Environmental Design, sets out a recommended maximum noise level of NR55 in car parks. Colt car park systems can be designed to achieve these noise levels if required.


The complete unit, including isolator, is rated at 300°C for 60 minutes, Class F300 to EN 12101-3 (2002). Jetstream is fully CE marked.

Please contact us for more information relating to the application, specification, installation and servicing of this product.

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