Plastic telescopic acoustic cavity liner set with external cowl.
Plastic, telescopic acoustic cavity liner set with external cowl, for background room ventilation. Compliant with BS 5250.
As a plastic component this item is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials.
For use in noisy areas to reduce the amount of noise entering the building for a more peaceful environment
External cowl protects against excessive weather conditions and alleviates air blasts through the cavity
Telescopic cavity liner contains a system of internal baffles to reduce light and draughts
Reduces sound by 42 dB with internal grille fully open or closed
Internal hit & miss grille manually adjusted with a sliding action allowing ventilation to be controlled as required
External water baffles prevent transfer of water across the cavity
Cowl, air brick and hit & miss grille UV stabilized to slow down the effects of sunlight
BRE verified equivalent area
As a plastic component this item is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials
Reduces sound, prevents transfer of water
UV stabilized polypropylene
Cowl: 255 x 154 x 74 mm (l x h x d)
Acoustic AirLiner® with Multifix® Air Brick: 220 x 140 x 250–404 mm (w x h x l)
Hit & Miss Grille: 271 x 171 mm (l x h)
F30/17 Ventilation ducts in external walling
F30/171 Ventilation ducts in external walling
U90/34 Through wall ventilator ducts
U90/340 Through wall ventilator ducts
Buff/ Sand Cowl/ Multifix® Air Brick.
Terracotta Cowl/ Multifix® Air Brick.
White Cowl/ Multifix® Air Brick.
9800 mm² (98 cm²)
Standard product features
Reduces sound, prevents transfer of water.
UV stabilized polypropylene.
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