To provide ventilation through external walls to the building interior.
Always use in conjunction with a Timloc airbrick. When fitted with a Timloc airbrick the cavity sleeve suits walls up to 275mm overall thickness.
Suits a single 9" x 3" Timloc airbrick and provides a maximum equivalent area of 6170mm².
-Unrestricted free airflow.
-Lightweight and easy to handle.
-Manufactured by injection moulding in polypropylene.
-UV stabilised, colourfast, durable and totally resistant to decay.
-Manufactured in the UK to BS EN IS0 9001 and BS EN IS0 14004.