White Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Loft Hatch Marley Double Roman

Marley Double Roman

Approved Document J

eliminating problems caused by water penetration whilst preventing the entry of birds and large insects into the roof cavity

In-line spring operated back draught shutter

Air bricks to can also used in conjunction with the telescopic underfloor ventilator for providing ventilation below suspended ground floors

White Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Loft Hatch Marley Double RomanProduct Description White 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