Terracotta cavity liners used to form and provide a duct through cavity walls to assist ventilation.
For use with or range of terracotta air bricks and plastic internal vents (available to purchase separately)
Suitable for new build and refurbishments.
Available in a choice of three sizes:-
- 215 x 65 x 200mm
- 215 x 140 x 200mm
- 215 x 215 x 200mm