Combination Fire and Smoke Damper FSD36 - Class II V-Groove Blade

The FSD36 Combination Fire/Smoke Damper is both UL555 and UL555S Classified, and rated as a 1-1/2 hour fire damper and a Leakage Class II Smoke damper. It features:

• Maximum velocity of 2,000 fpm
• Maximum 4" static pressure
• UL tested 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