Acoustic Blade Louvres

Product Highlights

High noise reduction -
performance tested to prevent noise transmission
from either inside or outside the building,
while still allowing constant air flow

Selection of louvre types -
providing various levels of acoustic performance (see links below);

Model ALA305 - medium performance, half chevron louvre

Model ALB615 - medium to high performance, full chevron louvre

Model ALC600 - medium to high performance, half chevron louvre

Model ALD600 - high performance, half chevron louvre

Louvre widths - available from 200mm to a maximum width of 2000mm. For larger openings use multiples of suitably sized louvres

Louvre heights - available in a full selection of standard heights (see tables below) giving maximum free inlet area and acoustic performance

Factory assembled - quality manufactured in a variety of materials and finishes to suit specific aesthetic requirements

Easily installed - rapid fitting into all wall types

Minimal maintenance - occasionally clean the louvre.
Protective metal and fittings maximises corrosion resistance

Optional Accessories

Bird/lnsect screens - to eliminate entry of birds and insects, with screens fitted to the internal face

Additional steelwork - where multiple louvres are used on large openings

Flashings - can be supplied to meet individual customer requirements

Opening Sizes

Where Ellflow louvres are to be installed into steelwork and timber, allow a 3mm clearance all round the louvre.
Where Ellflow louvres are to be installed into block work, allow a 6mm clearance all round the louvre.
When designing any ventilation system, pressure drop through a louver should be considered. The percentage of free area to the vvhole louvre face area is a function of height and width. Refer to the appropriate Ellflow Louvre Performance Chart to determine the actual pressure drop through the louvre and the free area. Each Louvre Performance Chart shows pressure drop (Pa) at air velocities (m/s) through the free area of the louvre.

Recommended Specification

Fresh air inlet louvres shall be of the Ellflow Accoustic Blade Model ( ) [specify model number] type and shall be of the size specified on the drawing. Louvre blades shall be of (Standard, Weatherproof) [select one] profile.
Louvres shall be of a depth of (100mm, l50mm) [select one], with a minimum coefficient of discharge of (0.63, 0.68) [select one].
Louvres shall be constructed of (Aluminium, Zincalume, Galvanised Steel, Colour Steel) [select one and specify colour where necessary]. Powdercoat finish is available.