Airbrick

Free air area and equivalent areas:

• Air brick - 6500 mm², equivalent to 6170 mm² for each unit.

• Telescopic underfloor vent - 6000 mm², free air and equivalent area.

Material:

• Air brick - UV stabilized polypropylene.

• Accessories and external cowls - polypropylene.

Accessories:

1201 - Telescopic cranked underfloor vent, features:

• Telescopic, sliding upper and lower halves, adjustable for a step of 3 to 5 brick courses (225 to 375 mm).

• Colour - black.

1202-1/ 1202-2 and 1202-3 - Cavity sleeves, features:

• Used with single or multiple stacked air bricks to provide ventilation through external walls.

• Lightweight and easy to handle.

• Durable and totally resistant to decay.

• Satisfies NHBC Standards.

1203 - Horizontal front extension sleeve, features:

• Installed between the back of an air brick and upper half of the telescopic cranked vent, to accommodate walls of more than 102.5 mm thickness up to a maximum of 215 mm (provides an extension of 115 mm).

• Colour - black.

1204 - Vertical extension sleeve, features:

Installed between the upper and lower halves of the cranked vent to accommodate a vertical step of more than 5 brick courses (375 mm). The addition of multiple units provides rises as follows:

• 1 unit 6 to 7 brick courses (450 to 525 mm).

• 2 units 8 to 9 brick courses (600 to 675 mm).

• 3 units 10 to 11 brick courses (750 to 825 mm).

• 4 units 12 to 13 brick courses (900 to 975 mm).

Colour - black.

1205 - Duct adaptor, features:

• Installed over the lower rear opening of the cranked vent or horizontal rear extension unit to provide a connection via a coupling connection to a circular 110 mm internal diameter plastics underground drainage pipe.

• Colour - black.

1206 - Horizontal rear extension sleeve, features:

• Installed over the lower rear opening of the cranked vent, providing an extension of 100 mm for each unit.

• Multiple units may be used to provide required extension.

• Colour - black.

External cowls, features:

Installed over airbricks to help reduce draughts caused by wind blasts.