The stainless steel return grilles shall be model SSGC5 by Anemostat and shall integrate with the ceiling style as scheduled.  The core shall be a stainless steel grid consisting of a 1/2" x 1/2" x 1/2" cells, and shall have a minimum free area of 90%.  For surface mounting applications, the border shall be stainless steel, and shall include countersunk screw holes for installation. Lay-in models shall include extension panels where required for the scheduled duct size and grid system module size. The grilles shall have a satin-polished border on exposed surfaces and 2B mill finish core.

Provide optional stainless steel opposed blade volume control dampers as scheduled.   Dampers shall be adjustable through the face of the register.