Home / Ducting / PVC Grilles & Diffusers / Airbrick Airbrick £6.36 – £19.44 DUCTMASTER PVC range of Airbricks. Size Choose an optionDouble AirbrickDouble Airbrick AdaptorSingle Airbrick ( no shutter)Single Airbrick Adaptor Clear Airbrick quantity Add to basket SKU: N/A Categories: Ducting, PVC Grilles & Diffusers Tag: PVC Grilles & Diffusers Product ID: 10449