Install where shown on the plans/outlet schedule Anemostat Model PHV-A square plaque type ceiling diffusers with adjustable down-blow.  The diffuser size shall be nominal 24” x 24” with minimum 18” square appearance panel, with inlet size and air flow capacities as shown on the outlet schedule.

The diffusers shall be constructed of (steel)(aluminum)(304 stainless steel), and shall be designed to integrate with the specified ceiling system type. The diffuser shall consist of a stamped, one piece back pan with a removable, heavy gauge appearance panel attached to the back pan via (4) positive locking posts.  The appearance panel shall have a circular, perforated hole pattern in the center, and shall have aerodynamic, rigid, hemmed edges around the perimeter. 

The diffuser air discharge pattern shall consist of both a 360° horizontal pattern along the ceiling in conjunction with a vertical down-blow pattern. An adjustable volume controller shall be accessible from the room side to vary the amount of air in the down-blow direction. Blank-off baffles shall be provided to obtain a 1,2,or 3 way horizontal blow pattern as scheduled.

Diffuser finish shall be (Arctic white)(satin polish finish-stainless only)(color as selected by the Architect).

Provide published performance data determined in accordance with the latest ANSI/ASHRAE standards for throw, pressure, and sound.