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This Combination Fire/Smoke damper was designed to reduce the spread of fire and smoke in hvac systems. It integrates two products into one. It's tested to 5,000 cycles and has a 1.5-hour fire rating by Underwriter's Laboratories and a UL Class II 350°F leakage rating for smoke. It comes with 16-gauge galvanized steel blades, a high torque spring to ensure closure during dynamic air flow, dual linkage and two heat sensor combinations: 165° and 250° or 212° and 350°F. Actuators are factory-mounted outside the airstream and tested with the damper as a matched set. The dampers are custom-made to fit electric and pneumatic actuators in even-inch widths of 15- to 32-in. and heights of 14- to 38-in.
Johnson Controls; 800/ASK-JNSN.
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