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Colt EWL Extruded Weather Louvre


Colt EWL Extruded Weather Louvre is a versatile louvre system providing either screening and/or rain defence.

Louvre blades form an aerodynamically efficient profile to achieve a high degree of rain defence. Allowance is made for thermal expansion without distortion along the length of each louvre blade. Water drains efficiently onto the cill through the mullions.

Standard product features


  • Static louvre


  • Extruded blades: Aluminium 6063-H T5
  • All other components: Aluminium 3005 H14

Louvre blade pitch and angle:

  • 50mm pitch at 45°


  • Not required


Product reference:

  • EWL – extruded weather / rain defence louvre offering excellent performance for normal and weathered ventilation applications.


  • Available in mill finish aluminium or polyester powder coating.  Consult with Colt for availability of colours and to obtain samples.

Polyester powder coating coverage:

  • Total: All exposed surfaces and edges of components and assemblies are coated excluding fixings, rivets and insect guards
  • Partial: Only external louvre blades and frames, corners and cills are coated, the remaining components are mill finish.


  • The louvres are available with either an internal or external flange frame.


  • When guards are used, the louvre design should allow for additional resistance to airflow and reduced flow rate performance.

Bird guards:

  • Available in aluminium, galvanised steel and stainless steel

Insect mesh:

  • Available in aluminium – 5000 series AL99.5 alloy – bright (mill) finish


  • Consult with Colt for recommendations and details.

Product specification


  • Horizontal
  • Vertical

Blanking panels

  • None
  • Single skin aluminium panel, mill finish
  • Single skin aluminium panel with external decorative polyester powder paint finish to match louvres
  • Insulated panel

Noise control

Ancillary items

  • None
  • Turret unit(s)

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

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