Suggested Division 15 Specification Linear Louver Diffusers - Aluminum Model: LL-2 - Two-Way Pattern, Fixed Louvers Linear louver diffusers shall be TITUS model LL-2 (two-way opposite). The diffuser shall be constructed of extruded aluminum and shall be built in standard one-piece lengths up to 6 feet and shall have the sizes and mounting types shown on the plans and outlet schedule. Lengths greater than 6 feet shall be furnished in multiple sections and will be joined together end-to-end with factory provided alignment pins to form a continuous appearance. All alignment components to be provided by the manufacturer.The diffuser core shall have fixed extruded aluminum deflection louvers locked together into a single assembly. The diffuser frame shall be heavy extruded aluminum construction. The louvered core assembly shall be removable from the outer frame for easy installation. 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. Optional opposed blade damper shall be constructed of heavy gauge steel (aluminum also available). Damper must be operable from the face of the diffuser. Optional directional blades, blank-offs and extruded aluminum mitered corners shall also be available. The manufacturer shall provide published performance data for the linear louver diffuser. The diffuser shall be tested in accordance with ANSI/ASHRAE Standard 70-1991.