• Background room ventilation, for use in noisy areas to reduce the amount of noise entering the building for a more peaceful environment.
• As a plastic component this item is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials.

• Background room ventilation, for use in noisy areas to reduce the amount of noise entering the building for a more peaceful environment.
• As a plastic component this item is not suitable for use within the external walls of high-rise buildings requiring non-combustible materials.

Plastic, telescopic acoustic cavity liner set with external cowl, compliant with BS 5250.

Features and benefits:

• 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 and 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 and miss grille UV stabilized to slow down the effects of sunlight.
• BRE verified equivalent area.

Components:

• Cowl.
• Multifix® Air Brick.
• Acoustic AirLiner®.
• Hit & Miss Grille.

Plastic, telescopic acoustic cavity liner set with external cowl, compliant with BS 5250.

Features and benefits:

• 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 and 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 and miss grille UV stabilized to slow down the effects of sunlight.
• BRE verified equivalent area.

Components:

• Cowl.
• Multifix® Air Brick.
• Acoustic AirLiner®.
• Hit & Miss Grille.