Louvre faced ceiling diffusers are all aluminium including the frame, blades and centre core. GL louvre faced diffusers are lightweight and will not rust nor corrode. They feature a welded core & frame for strength. They provide excellent diffusion performance, and are suitable for surface mounting or lay-in ceiling grids. The removable core, via a positive centre screw, makes them easy to install, clean & access any dampers located behind the diffuser. The louvre faced ceiling diffuser is suitable for use where cooling is required in areas of high heat and high humidity, and also to suit heating & cooling applications in cooler temperatures. To obtain a varying distribution pattern, triangular blanking plates can be fitted behind the louvre, thus maintaining a uniform face appearance.