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FIRE & SMOKE DAMPERS - 1.5 HOUR
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Combination Fire/Smoke Damper is both UL555 and UL555S Classified. It is rated as a 1-1/2 hour fire damper and a Leakage Class I, II & III.

Ruskin Company certifies that the Combination Fire/Smoke Damper shown hereon is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Program. The AMCA Certified Ratings Seal applies to air performance for these Dampers.It features:

Triple V-Groove Blades & aerofoil blades as well. Standard Maximum rating of 2,000 fpm and 4″ w.g. other optional also available. UL approval for dual directional airflow.Failsafe design, which enables the damper to automatically assume the desired position when fire or smoke (if smoke detector is present) interrupts operational power. The EFL or PFL heat-actuated release devices permit controlled closure through the actuator and are automatically remote resettable after test, smoke detection, or power failure conditions.Galvanized steel construction.