iECO insulated natural louvered ventilator

The Colt iECO is an automatic day to day and smoke ventilator for highly efficient natural ventilation that requires no external sources of energy. The iECO can also provide natural daylight entry.

Product information

The iECO is a cost-effective and reliable louvred ventilator, with a particularly high life expectancy, a wide range of variations and low heat losses. Its optimised louvre and body designs mean that it can achieve a U value of up to 1.6 W / m² K.

Features and benefits

Wide range of applications - iECO is classed as a dual purpose ventilator, providing day to day and smoke control ventilation and fire ventilation. iECO can also be installed in the vertical either for low level air inlet or for high level extract.

5 types of polycarbonate sheets - Standard and hail-protection versions, with either transparent or opaque louvres, as well as a Comfort Light version where additional protection is required against high temperatures. Further colour versions available on request

A huge range - a wide variety of possible sizes, louvre designs and control types

High performance - iECO smoke vent is aerodynamically efficient and has a high resistance to weather. 

Certified performance - iECO has been exhaustively tested and certified to EN 12101-2 in accredited third party test laboratories and is CE marked. 

Quality of manufacture - iECO is manufactured under the ISO 9000 quality standard. Each unit is given a functional test before despatch.

Design service - Colt provides a pre-order design service. Please contact Colt for more information relating to the application, specification, installation or servicing of iECO.


Dimensions / size range

  • Six width options from 16.77" / 426mm throat width to 91.96" / 2336mm throat width.
  • Thirteen length options available from 27.75" / 705mm to 137.71" / 3498mm throat length.

There are some restrictions on the maximum size of the ventilator if glass louvers are used. Colt can advise on this.

louver options

Depending on the application, louvers made from:

  • A2I – Insulated aluminium panel
  • P*16 – 16 mm thick clear or intransparent polycarbonate louvres
  • P*16H – 16 mm thick hail-resistant clear or intransparent polycarbonate louvres


  • No seals
  • Low-loss brush seals (for aluminium louvres)
  • Rubber seals (for glass or polycarbonate louvres)

These reduce air leakage when the ventilator is closed.

Colors/ finishes options

  • Mill finish
  • Polyester powder paint to a RAL color, standard 75 mu

Fixing options

Suitable for fixing either onto a curb, into glazing, into curtain walling, or into roof sheeting.

Controls options

  • Pneumatic
  • 24V DC electric
  • 230V AC electric
  • Manual

For both electric and pneumatic versions, either double-action locking mechanisms, failsafe open or failsafe closed.

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.

Other options / accessories

  • Bird guard
  • Insect guard
  • Burglar guard



Its performance varies with the size and options selected. Most tests to EN 12101-2.

Aerodynamic coefficient (Cv) up to 0.68
Reliability RE 1000 (10,000 cycles)
Wind load up to WL 4,000 N/m²
Snow load up to SL 2,000 N/m²
Hail Resistance Class H5
Resistance to heat B 300
Low ambient temperature operation T(00) to T(-25)
Materials resistance to fire B or E (to EN 13501-1)
U value up to 1.6 W/m2/K*
Sound insulation up to 13 dB R'w
Casing Insulated XPS


Tested to and in compliance with EN 12101-2 and CE marked.

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