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 ...

The HPKB is a quiet, ceiling-mounted exhaust air unit that consists of an exhaust air diffuser, HPKH, and an insulated connection box, ATTC. The diffuser HPKH has an almost completely perforated ...