Adjustable plenum-slot supply diffusers shall be Anemostat Model SCD and matching Model SCR ceiling plenum return assemblies as scheduled.  Outer frame type shall conform and integrate with the ceiling grid system shown. 

The diffusers shall consist of an integrated plenum and diffuser section, and shall consist of 1 to 4 slots, with slot widths of 3/4", 1", or 1-1/2" as scheduled.  24", 36", 48", or 60" lengths shall be provided as shown.

The extruded aluminum pattern controllers shall be field adjustable form the face to provide the required air pattern, from horizontal to vertical projection.  Controllers shall include an edge seal to close off air to insure a tight horizontal air pattern when required.

Model SCR return units shall match supply diffuser face appearance, but shall have an air passageway to the ceiling plenum for return use.  No pattern controllers are required.

Diffusers shall be constructed from minimum 24 gauge zinc coated steel.  The exposed face surfaces and pattern controllers shall be painted flat black.  Center tees and optional side tees shall be Anemostat Arctic White.

Model SCD/SCR Optional Accessories
Provide inlet balancing dampers as scheduled. Plenums shall be insulated with (1/2" internal insulation) (1/2" external foil-faced insulation) (1/2" internal foil-faced insulation)(closed cell fiber-free foam insulation). Side tees shall be included where shown and shall be finish with Anemostat Arctic White.  Provide surface mounting frames for installation into hard surfaced ceilings as required.  T-bar clips, attached to the plenum, shall secure the unit to the tee bar runners.