Kameleon natural casement ventilator

Kameleon 5 glazed natural casement ventilator, suitable both for day to day and smoke ventilation through the façade. Both flap and base frames have thermal breaks. It is particularly suited for installation into glazing systems. Kameleon conforms to EN 12101-2 and EN 14351-1 and is CE marked. For vertical installation only. It is manufactured under the ISO 9001 quality standard.

Product information

Kameleon 5 is a thermally broken glazed natural casement ventilator for installation into the vertical for both day to day and smoke ventilation.

Its form and function makes it particularly suited to naturally ventilated buildings where high acoustic, thermal and aerodynamic performance is required. Typical applications are hospitals, schools, shopping centres, apartments and commercial buildings.

Features and benefits

A wide range of applications – Kameleon 5 is classed as a dual purpose ventilator, providing both day to day and smoke control ventilation. It can also be installed either for low level air inlet or for high level extract. Glass versions allow the entry of natural daylight, and a wide range of infill panels are available. Options include pneumatic or electronic controls, as well as a variety of finishes. There are two different flap profile types, depending on the required appearance and performance of the ventilator.

High performance - Kameleon 5 has high aerodynamic, acoustic and thermal performance, and also has a high resistance to the effects of fire. Both flap and base frames have thermal breaks. See the product options page for further details.

Proven performance – All versions of Kameleon 5 have been exhaustively tested and certified to EN 12101-2: 2003 as dual purpose ventilators in accredited third party test laboratories and are CE marked. The ventilator is also CE marked to EN 14351-1, which guarantees its performance as a façade element.

High performance in a fire – Kameleon 5 is very suitable for protecting escape routes in places such as stairwells where it can act as an automatically opening ventilator (AOV), since it has high aerodynamic efficiency, opens quickly, and has a large opening.

Easy to install - Kameleon 5 is delivered fully assembled to site for installation into a structural opening or curtain walling. It must be installed in the vertical.

Durable – The frame is manufactured from tough, corrosion resistant aluminium alloy, with stainless steel fixings.

Quality of manufacture - Kameleon 5 is manufactured under the ISO 9001 quality standard. Each unit is given a functional test before despatch.

Aesthetic design – Kameleon 5 uses a narrow framework. Electric actuators or pneumatic cylinders can be hidden within the frame and are anyway small in size.

We are at your service

We provide a pre-order design service. We also offer complete project management, installation, wiring and commissioning, which means that we take complete responsibility to ensure that the product is in full working order within one package of works.

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



Colt Kameleon 5 natural casement ventilator, suitable both for day to day and smoke ventilation, conforming to EN 12101-2 and EN 14351-1 and CE marked. Suited only for installation into the façade. Both flap and base frames have thermal breaks. Manufactured under the ISO 9001 quality and ISO 14001 environmental management standards.


  • Hinges at the bottom, opens from the top
  • Hinges at the top, opens from the bottom

Dimensions/size range

  • From 458mm to 2558mm in width in 1mm increments.
  • From 458mm to 2558mm in height in 1mm increments. 


Profile depth 76mm.

  • Large flap frame, 99mm wide (as seen from the outside)
  • Small flap frame, 70mm wide (as seen from the outside)

Flap options

  • Large flap profile and infill panel between 8 and 58 mm thick, single, double or triple glazed
  • Small flap profile with infill panel between 20 and 28 mm thick, single, double  or triple glazed
  • Polycarbonate
  • Infill panel 


All components of the base and flap are manufactured from EN AW-6063 T6 aluminium alloy. The frames of both the base and flap are thermally broken. 

Colours/ finishes options

  • Mill finish, standard
  • Polycarbonate
  • Polyester powder paint to a RAL colour, standard 75 mu
  • Anodised, standard 20 mu

Fixing options

  • Fixing to curtain walling using 26 to 36mm thermally broken glazing frame adaptor
  • Fixing to structural opening using either through frame or with fixing lugs

Controls options

  • Pneumatic (for smoke and day to day ventilation)
  • 24V DC electric (for smoke and day to day ventilation)
  • Visible or hidden

All controls are installed behind the slim profiles.

If used as a smoke ventilator, activation is either by local thermal fuse which opens the unit at a pre-selected temperature, or by responding to an external release signal.



The following performance attributes follow tests to EN 12101-2:2003 (standard for smoke and heat exhaust ventilators) and EN 14351-1:2006 (standard for windows and doors). The exact performance attribute will depend on the chosen size, controls, and flap type.

Aerodynamic coefficient Up to 0.65
Reliability class RE 1000
Wind load  Up to WL 3000
Snow  load  SL 0
Resistance to heat B 300
Low temperature class T(00) to T(-15)
Materials resistance to fire E (to EN 13501-1)
U value Up to 1.0 W/m²K
Air permeability Class 4 - Maximum of 0.20m3/hr/m² or 0.07m³/hr/m at 100Pa
Water tightness Class 9 A - No leaks at static pressure of up to and including 600Pa
Sound insulation  Up to 42 (-1:-4) dB R’w


Tested to and in compliance with EN 12101-2:2003 and EN 14351-1: 2006 and CE marked.

Product video

© 2024 Kingspan Holdings (Irl) Limited