Product code: B007412
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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 6170mm?.
Features:
- Unrestricted free airflow
- Lightweight and easy to handle
- Manufactured by injection moulding in polypropylene
- Black finish
- UV stabilised, colourfast, durable and totally resistant to decay
- Manufactured in the UK to BS EN IS0 9001 and BS EN IS0 14004