Stainless steel ceiling diffusers shall be square type Model E as manufactured by Anemostat and shall be selected to integrate with the ceiling system as shown on the plans and as scheduled.  Diffusers requiring directional control to proportion the horizontal discharge air shall include field adjustable deflectors that are factory welded to the inner cone assembly. Diffuser cones shall be die stamped and shall be smooth and without corner joints. Diffusers shall have integral, drawn round necks for duct attachment, and shall utilize 3-cones regardless of inlet size for a uniform appearance. Diffusers shall have a 360° horizontal air discharge pattern. The diffuser inner assembly shall be removable, without tools, for cleaning and installation. A center hole with plug button in the inner assembly shall allow for optional damper adjustment without removal of the cone assembly.

Diffusers shall be constructed from 304 or 316 stainless 
steel as scheduled. MRI - all aluminum diffusers shall be 
non-magnetic.

Round volume control dampers shall be the butterfly type, and shall be steel, aluminum or stainless steel, as scheduled, and adjustable from the face of the diffuser. Volume control dampers for use with MRI imaging rooms shall be located upstream of the diffusers.

The manufacturer shall provide performance data obtained in accordance with current ANSI/ASHRAE standard 70.

The baked-on finish shall be Anemostat Arctic White, or color as scheduled. If custom, a sample color chip shall be provided to the diffuser manufacturer. Stainless steel finish shall be satin polished on all exposed surfaces.