The CRA type diffusers are designed for ceiling applications
These diffusers have fixed blades. For supply air purposes, they are characteristically suitable for horizontal air throws. The blades are integral with the diffuser. These diffusers are recommended for use with ceiling heights up to 4 m. It is important that these diffusers are installed flush with the ceiling for best performance. In cases where they are installed apart from the ceiling, a special nozzle is added to the outlet, to compensate for the absence of the ceiling.