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Mechanical / HVACaka: air diffuseraka: ceiling diffuseraka: supply register

Diffuser

In Plain English

The grille or register at the end of a duct that spreads conditioned air evenly into a room.

Definition

A ceiling or wall-mounted air distribution device that discharges conditioned air from the ductwork into a space in a controlled pattern that promotes mixing and comfort. Diffusers spread air across the ceiling surface using the Coanda effect to prevent drafts. They are available in various shapes—square, rectangular, round—and pattern configurations to suit different applications.

Example

Four-way square ceiling diffusers at 10-foot spacing provide uniform air distribution across the open office floor plate.

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