Suggested Division 15 Specifications 301 Series 304 Stainless Steel Supply Grilles Model Description 301RS-SS Stainless Steel supply grilles shall be TITUS Model 301R-SS (single deflection) of the sizes and mounting types shown on the plans and outlet schedule. The deflection blades shall be available parallel to the short dimension of the grille. Construction shall be of 304 stainless steel with a 1 3/8-inch wide border on all sides. Screw holes shall be countersunk for a neat appearance. Corners shall be welded with full penetration resistance welds. Deflection blades shall be contoured to a specifically designed and tested cross-section to meet published test performance data. Blades shall be spaced on ¾-inch centers. Blades shall have friction pivots on both ends to allow individual blade adjustment without loosening or rattling. Plastic blade pivots are not acceptable. Optional opposed-blade volume damper shall be constructed of heavy gauge steel, aluminum, or 304 stainless steel. Damper must be operable from the face of the grille. The grille finish shall be #04 mill. The manufacturer shall provide published performance data for the grille. The grille shall be tested in accordance with ANSI/ASHRAE Standard 70-1991.