3UL Rain Defense Louvres

3UL weather louvres are roll-formed triple bank louvres designed for applications requiring ventilation with the maximum degree of rain defence.

Features and benefits of Colt Universal Louvre

Available in a wide range of options -shapes, configurations, materials, finishes and coatings - to meet the requirements of almost any project from a screening perspective.

Aerodynamic efficiency reduces air resistance and therefore saves operating cost by allowing the plant and the aperture to be minimised.

High resistance to rain ingress for enhanced weather protection.

Manufactured from corrosion-resistant materials for durability and maintenance-free operation.
The allowance of thermal expansion of the louvres is designed into the product. Louvres are clipped - rather than riveted or screwed - to the supporting mullions.

Durable - tested to EN 13030:2001 for premier performance.

Easy installation – available either as pre-assembled units delivered to site or as a kit of parts.
If noise reduction is required, acoustic louvre panels may be used.

Rain defence performance (to EN 13030) - Class A - up to 3.5m/s suction velocity. Triple bank louvres offer maximum rain defence.


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