White Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Loft Hatch In-line spring operated back draught

In-line spring operated back draught shutter

Back: 35mm

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

2BS 5250:2011 Control of Condensation in Buildings

Conforms to EN472 Class 2

White Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Loft Hatch In-line spring operated back draughtProduct 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