Suggested Division 15 Specification Perforated Ceiling Diffusers Aluminum Model: PXP-AA - Return Panel, Flush Face Perforated ceiling panels for return applications shall be TITUS model PXP-AA (aluminum, flush face). Perforated face panels shall have 3/16-inch diameter holes on ¼-inch staggered centers and no less than 51 percent free area. The return panels must match TITUS supply models in appearance and shall be provided in the sizes and mounting type shown on the plans and outlet schedule. The 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 perforated return panels. The panels shall be tested in accordance with ANSI/ASHRAE Standard 70-1991.