Install where shown on the plans and outlet schedule Anemostat Model PGR Paragon plaque ceiling diffusers.  The diffuser sizes shall be nominal 24” x 24” or 12” x 12”, as scheduled, with minimum plaque diameters of 19” or 10”.
 
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 back pan and a removable, heavy gauge appearance panel attached to the back pan via (4) positive locking posts.  The appearance panel shall have aerodynamic edges around the perimeter and shall be a single piece construction.  The panel shall be flat, smooth, and shall be free of any welding or forming blemishes.
 
The horizontal air discharge pattern shall be 360° type. Blank-off baffles shall be provided to obtain 1,2,or 3 way blow patterns as scheduled.
 
Provide volume control, model VD butterfly type dampers as scheduled.  Dampers shall be adjustable from the face.
 
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.