Acoustic Louvres

As part of the Colt Universal Louvre range, Colt can provide acoustic louvre panels for mounting behind the louvre. Plant rooms, cooling towers, condenser plant and so on will produce sound pressure levels which may exceed existing or required noise criteria at prescribed distances from the building.

Colt offers attenuation for the Colt Universal and "E" Series Louvre Systems that will meet the most stringent criteria. If a single bank of elements does not provide the required noise control, a double bank may be specified. As an alternative, duct silencers may be selected to give the desired noise reduction.

To ensure the most economic solution, noise control must be considered at the earliest possible design stage. Retrofit installations of acoustic louvres can be significantly more expensive. If in doubt, please contact us.

There are two acoustic louvre models:

Type R
Optimum acoustic performance with normal pressure drop.

Type LP
Normal acoustic performance with minimum pressure drop.

Material of acoustic louvres
The outer casing shall be of no less than 1.2mm galvanised mild steel sheet. The acoustic louvre blades shall be of aerofoil configuration formed from 0.7mm perforated galvanised mild steel sheet on the inner surface and 0.7mm galvanised mild steel sheet externally.

Modules
Acoustic louvre banks over 1220mm wide and/or 3660mm high will normally be supplied as two or more modules for site assembly.

Infill
The infill shall be in organic mineral wool or glass fibre of 47kg/m³ density and packed under not less than 5% compression to eliminate voids due to settlement. The infill shall be inert, as well as vermin, rot and moisture proof.

Performance
Please see Louvre Systems leaflet, page 31.

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