When confronted with the task of choosing terminal outlets (grilles and diffusers) for a supply duct system, the designer has many types from which to choose. Whether the duct system will be exposed ...

Added to the company’s line of grilles and registers are the 2- by 2-foot light commercial diffusers. The diffusers are available in two-cone, three-cone, and perforated models. The two-and three-cone ...