• 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, compliant with BS 5250.

Features and benefits:

• Telescopic cavity liner contains a system of internal baffles to reduce light and draughts.
• Reduces sound by 38 dB with internal grille fully open or 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.
• Air brick and hit and miss grille UV stabilized to slow down the effects of sunlight.
• BRE verified equivalent area.

Components:

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