Anemostat Model DCC-75 (3/4” slots) / DCC-150 (1-1/2” slots) Cassettes diffusers shall be furnished and installed where shown on the plans. The diffusers shall be nominal 24” x 24” and designed for integration into they ceiling system shown (Armstrong Vector Ceiling System) (Lay-in, T-bar suspended grid system) (9/16” Narrow slot suspended grid system). The supply diffusers shall consist of one, two, three, or four continuous perimeter slots, 3/4” or 1-1/2” wide as indicated, surrounding a fixed center plaque. The core shall be removable for air volume adjustments as required.  The directional supply diffusers shall have a 4-way, 3-way, 2-way opposite, 2-way corner, or 1-way air distribution pattern as shown on the plans. Factory installed, internally hidden blank-off plates shall provide directional characteristics so that all diffusers have a common, 4-way pattern appearance. The diffuser shall have an integral square to round adapter to provide for round duct attachment.

Diffuser assembly shall be all welded steel construction. (Optional) Diffuser shall be all welded aluminum construction with a steel square to round adapter.

The diffuser assembly shall have a baked-on Arctic white finish, or optional custom color as indicated.

Provide the following options, if scheduled:  Model VD butterfly air volume control damper, Model TBF T-Bar frame for plaster ceiling