Brown Combination Air Brick Vents 9" x 3" for Air Flow Ventilation access_doors_panels System independently wind tunnel tested

System independently wind tunnel tested at the BRE

Robust and lightweight alternative to mortar

For replacement of old perished felt at eaves level

7 minCuring speed * (20°C / 65% R

Brown Combination Air Brick Vents 9" x 3" for Air Flow Ventilation access_doors_panels System independently wind tunnel testedProduct Description Brown 9" x 3" Air Brick Vents Plastic interlocking air brick ventilator. Clip together facility provides a choice of ventilation sizes. Can be stacked together to create 9" x 6" and 9" x 9" combinations. Moulded in mortar key ensures secure adhesion to the building fabric. Meets NHBC requirements for the control of condensation in buildings. Manufactured to BS 493: 1995 + A1: 2010. Other colours and ventilation fittings for this