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Ventilation fan



Roof Mounted Axials

Our range of lightweight and energy efficient roof fans are designed to ensure a easy and compact installation which is aesthetically pleasing to the eye.


Fans are available in diameters from 400mm to 800mm and airflow rates up to 5 m /s.


Each fan is fitted with an adjustable pitch impeller, allowing finite adjustment where needed.


All fans are designed for inverter control to ensure economical use.



Roof fan with horizontal discharge

Basic Features:


  • High efficiency aerofoil blade design

  • Horizontal discharge version

  • Integral Bird Guard

  • Low sound levels

  • IE2 or IE3 motors

Technical Specification
Technical Specifications



  • Diameters from 400mm to 800mm

  • Polypropylene aerofoil blade design

  • Blades clamped within a central hub for adjustable pitch settings

  • Dynamically balanced to BS 848-7 / ISO 14694

Fan Casings


  • Fan support and cowl manufactured using UV resistant glass reinforced plastic 

  • Motor support frame manufactured from mild steel with suitable corrosion protection finish

  • Motor side guard fitted as standard

  • Bird guard fitted as option

Fan Motors


  • Totally enclosed squirrel caged (TEFC)

  • IP55 ingress rating as standard (higher levels available on request)

  • Minimum Class "F" motor winding insulation

  • Continuous operation from -40 C to -50 C

  • Single phase (200-240V) or three phase (380-420V versions available

  • 50 Hz or 60 Hz frequencies available



Long Cased Axial Fan for Building Services HVAC Applications

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