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 an internal baffle to reduce light and draughts
Reduces sound by 39 dB with internal grille fully open and 40 dB when 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 96 x 44 mm (l x h x d)
Acoustic AirLiner® with Multifix® Air Brick: 220 x 71 x 250–368 mm (w x h x l)
Hit & Miss Grille: 271 x 95 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.
6300 mm² (63 cm²)
Standard product features
Reduces sound, prevents transfer of water.
UV stabilized polypropylene.
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