Designed to be built into external wall types during construction in accordance with Approved Document B (fire safety)
Airbrick and Duct Transition
215x65x600 / 265x120x600
204x60mm / 125mm Ǿ
215x140x600 / 265x190x600
150mm Ǿ/ 180mm Ǿ / 204x60mm / 220x90mm
215x215x600 / 265x265x600
180mm Ǿ / 200mm Ǿ / 300 x 100mm / 300 x 125mm
215x290x600 / 265x340x600
200mm Ǿ / 250mm Ǿ / 400 x 100mm / 400 x 125mm
215x90x600 / 204x60x600
204 x 60mm / 220 x 90mm / 150mm Ǿ / 125mm Ǿ
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