Description
First of all our Combination cavity sleeve which fits into the back of the airbrick to ventilate through a standard cavity or solid brick wall. Furthermore the unit can be stacked to create a 9″ x 6″ and 9″ x 9″ alternative and telescopes to fit cavity widths of 50mm to 100mm. Ensure further extension possible through the addition of extra product units. Also includes an integral wind baffle. Consequently will also act as an extension to the underfloor vent.
Made from high impact styrene.
Regulations – BRE Digest 17, BRE Digest 262, Building Regulations C4, NHBC Standards 5.2 and BS 5250:2011 Control of Condensation in Building
