Home > Companies > Colt International Ltd > Airlite natural louvred ventilator

Airlite is a high performance natural louvred ventilator. It is dual purpose, giving highly efficient natural ventilation as well as smoke control ventilation. It is suited either for extraction or as an inlet, as well as the entry of natural daylight for most kinds of industrial and commercial buildings. It can be fitted into most types of walls and roofs. Double weather seals ensure that air leakage and heat losses are greatly reduced when it is closed. It is tested to and in compliance with EN 12101-2 and is CE marked. It is made from tough, corrosion resistant aluminium alloy and is manufactured under the ISO 9001 quality and ISO 14001 environmental management standards.


  • Certified performance.
  • Durable.
  • Energy efficient.
  • High aerodynamic and acoustic performance.
  • Wide range of applications.

Related literature

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Standard product features


Manufactured from corrosion resistant aluminium alloy grade 3005 in accordance with EN 573-3, with stainless steel fixings.


Double seals are used to reduce air leakage when closed.

Its performance varies with size and options selected:

  • Aerodynamic coefficient (Cv): Up to 0.67.
  • Reliability: RE 1000 (10,000 cycles).
  • Wind load: Up to 12,500 N/m².
  • Snow load: Up to 4,500 N/m².
  • Resistance to heat: B 300.
  • Low ambient temperature class: T(-25).
  • Materials resistance to fire: E (to EN 13501-1).
  • U value: 1.4–2.8 W/m²K.
  • Air permeability (medium size unit): 17.1 m³/m²/hr at 50 Pa.
  • Sound insulation: 20 dB R’w.


Wind baffles:

Wind baffles help the ventilator to be aerodynamically efficient. In the case of Airlite these comprise a movable element which disappears when the ventilator is closed.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
90-45-80/340 Natural smoke and heat exhaust ventilators

Product specification

An important note about specifying



Colt International Ltd


+44 (0)23 9245 1111

Product reference

Airlite natural louvred ventilator


 - Throat width:
[ ______ ]
 - Throat length:
[ ______ ]

Fixing type

 - Aluminium base profile to suit:
[Curtain walling]

Frame finish

[Mill aluminium]
[Polyester powder coating, RAL]
Insert colour requirement.


Double skin insulated aluminium


[16 mm clear seven layer multiwall (light transmitting) polycarbonate]
[16 mm grey seven layer multiwall (non-light transmitting) polycarbonate]
[16 mm opaque seven layer multiwall (light transmitting) polycarbonate]


[24 V DC]
[Pneumatic, double locking]
[Pneumatic, failsafe closed]
[Pneumatic, failsafe open]


[Not required]

Wind baffles

[Not required]

Manufacturer details

Colt House,
Ridgeway Office Park,
Bedford Road,
Hampshire, GU32 3FQ
Tel +44 (0)23 9245 1111
Fax +44 (0)23 9245 4220
NBS Plus
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