The TROX FD600/24 Swirl Diffuser is designed to fit into a standard 600 mm square ceiling tile with 24 fixed blades and is provided with either a square or round face. It is only manufacturer in ONE size but, it can be supplied with blanking plates fitted to the rear of the diffuser face to reduce the air flow if needed. This diffuser is designed to provide a radial air flow discharge pattern with high induction flow rate.