Grey Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Pack Size:10 Each pair of extension sleeves

Each pair of extension sleeves adds on a extra 120 - 280mm

Wall mounted with shelf Support bracket ( Wooden shelf not included )

‘THE BUILDING REGULATIONS 2000 ‘Conservation of fuel and power’ APPROVED DOCUMENT L1A & L2A (2006 Edition)

Universally handed no need for left or right units

Airbricks are one of the first entry points of flood water into a property

Grey Combination Air Brick Vents 9" x 3" for Air Flow Ventilation Pack Size:10 Each pair of extension sleevesProduct Description Grey 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