Steel linear supply plenum-slot diffusers shall be Anemostat Model SLSD & Model SLSR matching ceiling plenum returns as scheduled.  Outer frame type shall conform and integrate with the ceiling type shown.  Provide cross-notches in the center of 48" units for 2' x 2' ceiling grid systems.  Diffusers and returns with two way blow face patterns shall include notched end caps to allow grid member to run parallel within the diffuser and through end caps.

Linear diffusers shall be provided in nominal lengths of 2', 3', 4', or 5' lengths, and have 1 to 4 slots as scheduled for the performance requirements as shown.

Diffusers and matching returns shall be constructed of steel. Unpainted surfaces shall be zinc coated.  The supply diffuser assembly shall consist of a fixed pattern diffuser, integral with a supply air plenum, with an inlet collar of the size as shown.  Air flow pattern shall be one or two way horizontal blow as scheduled.  Supply and return units shall be identical in appearance from the face.

Finish shall be white (or color as scheduled or selected by the Architect) on all exposed surfaces.

SLSD Options
Provide surface mounting frames where used with hard surface ceiling systems. Provide field mounted 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).