The new displacement flow diffuser type QLW-AZ is now available. The combination displacement flow diffuser type QLW-AZ for supply and extract air has been designed for horizontal installation into walls and formed plaster board bulkheads. The type QLW-AZ displacement flow diffuser consists of a detachable diffuser face made of round-hole sheet steel, a plenum box with spigots for supply and extract air and the optional extra cross-talk sound attenuator with an inner lining of mineral wool and glass fibre cover on the exposed face. For details please refer to leaflet no. T1.3/8/EN/1.