• For ventilating boilers, stoves and fires, HETAS approved for use with solid fuel appliances.
• 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 5440-2. A cowled option is available.

Features and benefits:

• Telescopic cavity liner contains a system of internal baffles to reduce light and draughts.
• Reduces sound by 39 dB for a more peaceful environment.
• Finished with a fixed open flush fitting louvre ventilator internally.
• External water baffles prevent transfer of water across the cavity.
• Air brick and louvre grille UV stabilized to slow down the effects of sunlight.
• Cowled option available to protect against excessive weather conditions and alleviates air blasts through the cavity.
• BRE verified equivalent area.

Components:

• Multifix® Air Brick.
• Acoustic AirLiner®.
• Louvre Grille.
• Cowl.