• 3UL

Colt 3UL Universal Louvre fixed metal weather louvre system

Colt 3UL Universal Louvre is a roll-formed triple bank louvre system designed for applications requiring ventilation with the maximum degree of rain defence.

Product information

Generic types

Colt 3UL Universal Louvre is a roll-formed or extruded double bank system, used for screening and/or ventilation. It is designed for use where rain defence is of the utmost importance.

3UL is a triple bank louvre system When rain defence is needed, we recommend the use of either 2UL or 3UL. When rain defence is not of primary importance, we recommend the use of 1UL.

Colt Universal Louvre can be uniquely configured to provide the solution to your needs.

Features and benefits of Colt Universal Louvre

Highly aerodynamically efficient – this reduces air resistance, allowing the plant and the aperture to be minimised thereby saving running costs.

Enhanced rain defence performance - 2UL and 3UL versions have high resistance to rain ingress. Unlike other louvre types, Colt 2UL and 3UL panels have efficient drainage paths into their hollow section mullions, which in practice further increases their rain defence effectiveness.

Durable and maintenance free – UL is completely made from corrosion resistant materials.

Thermal expansion of the louvres enabled – the louvres are clipped (and not riveted or screwed) to structural supporting mullions.

Proven performance - UL has been tested to EN 13030:2001.

Easy to install – UL can either be delivered to site pre-assembled or as a kit of parts.

A wide range of options - it is available in various shapes, configurations, materials, finishes and coatings to meet the requirements of almost any project. See the options tab.

Louvres can be extruded or roll-formed; either mill finish, polyester powder painted or anodised; plain, perforated or stucco embossed.

Louvre panels can incorporate mitred corners, special shapes and louvre doors. Colt also has a range of turret units.

If noise reduction is required, acoustic louvre panels may be used.

Performance

Universal Louvre has been tested to EN 13030:2001. See the performance tab for the test results.

Colt UL louvre selection program

“UL Select” is an Excel sheet which enables users to make their own selection of Colt louvre systems based on the weathering classification and aerodynamic performance required for the system. If the area of louvre or the airflow is known, the program provides the pressure drop. If the flow rate and the maximum pressure drop are known, the program provides the minimum size of louvre. Click here to access it.

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.

Options

Description

Colt Universal Louvre is a versatile louvre system providing either screening and/or rain defence in a wide variety of product options, materials and finishes.

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.

Mullions are concealed at maximum 1250mm centres and the points of support along their length are set in accordance with prevailing site wind pressures (as calculated and specified by a structural engineer).

System Types

  • Universal Louvre 3UL/SH - Triple bank shallow section, front louvres at 50mm pitch
  • Universal Louvre 3UL/DH - Triple bank deep section, front louvres at 100mm pitch

Configuration

  • Horizontal
  • Horizontal inverted
  • Vertical

Material

  • Aluminium
  • Mild steel
  • Stainless steel

Texture

  • Plain
  • Perforated
  • Stucco embossed

Colours/ finishes options

  • Mill aluminium
  • Anodised aluminium
  • Polyester powder coated to a RAL colour, list of colours upon request
  • PVF2

Paint coverage

  • Not relevant
  • Total
  • Partial

Guards

  • None
  • Aluminium bird guard
  • Galvanised steel bird guard
  • Stainless steel bird guard
  • Aluminium fly guard
  • Stainless steel insect mesh

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

  • None
  • Type R acoustic louvre panels - Optimum acoustic performance with normal pressure drop
  • Type LP acoustic louvre panels - Normal acoustic performance with minimum pressure drop

Accessories

  • None
  • Visible frame double door
  • Visible frame single door
  • Concealed frame double door
  • Concealed frame single door
  • Turret unit(s)
  • Circular panel(s)
  • Triangular panel(s)

Performance

Aerodynamic performance

  • Universal Louvre 3UL/SH - minimum performance coefficient (Cv) of 0.277 (inlet) and 0.22 (extract). This is equivalent to Class 3 to EN 13030.
  • For data on DH (deep) versions, please contact Colt.

Rain defence performance (to EN 13030)

Class A - up to 3.5m/s suction velocity. Triple bank louvres offer maximum rain defence.

For data on DH (deep) versions, please contact Colt.

Testing

  • Tested to EN 13030:2001
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