Suggested Division 15 Specifications Direct Spiral Duct-Mounted Supply Grilles Aluminum Single Deflection Models: US301FL US301FS Double Deflection Models: US300FL US300FS Perforated model: US8F Aluminum supply grilles shall be TITUS direct spiral duct-mounted supply grilles model US301F (single deflection) or US300F (double deflection) or US8F (perforated face) for the sizes and mounting types as shown on the plans and outlet schedule. The deflection blades shall be available parallel to the long or short dimension of the grille. All supply grilles shall be constructed with end caps with foam gaskets for a tight seal to any size duct diameter. All supply grilles shall be constructed with a 1-inch wide border. Blades shall be constructed of heavy duty extruded aluminum and shall be spaced ¾-inch apart. Blades shall extend completely through the side frame on each side to ensure stability throughout the complete cfm operating range of the grille. Blades shall be individually adjustable without loosening or rattling and shall be securely held in place with tension wire. (US8F: perforated face will have 3/16-inch holes on ¼-inch staggered centers.) Optional air scoop damper/extractor (option ASD) shall be constructed of heavy duty aluminum. The ASD must be operable from the face with a screwdriver. The grille finish shall be #26 white. The finish shall be an anodic acrylic paint, baked at 315°F for 30 minutes. The pencil hardness must be HB to H. The paint must pass a 100-hour ASTM B117 Corrosive Environments Salt Spray Test without creepage, blistering or deterioration of film. The paint must pass a 250-hour ASTM D870 Water Immersion Test. The paint must also pass the ASTM D2794 Reverse Impact Cracking Test with a 50-inch pound force applied. The manufacturer shall provide published performance data for the grille. The grille shall be tested in accordance with ANSI/ASHRAE Standard 70-1991.