Cavibrick Rectangular to Round Converter Sleeve

Where it is proposed to provide ventilation to a remote room, under floor area or void, a rectangular to round converter sleeve is available to permit the use of standard 100mm nominal plastic soil pipe. The cavibrick promotes excellent air throughput that can be conveyed using standard pipe if so required. We recommend sleeves are protected with a cavitray where they pass through the cavity, to comply with NHBC/best practice. (See Sleeve and Duct Cavitrays.)