FSD60-BAL UL Classified 1 1/2 hr. Class I, Airfoil Blade, Modulating

The FSD60-3BAL Combination Fire/Smoke and Volume Control Damper is both UL555 and UL555S Classified. It is rated as a 1 1/2 hour fire damper and a Leakage Class I smoke damperIt features:

Rated to 2,000 fpm and 4" w.g.
UL approval for dual directional airflow.
Airfoil blades, which have greater strength, less static pressure drop, superior sealing ability, superior fire protection ability and produce less noise.
Designed to balance the airflow in ducts while simultaneously providing fire and smoke damper protection.
Equipped with 24VAC/VDC actuator with a built in potentiometer allowing damper to open to numerous positions and still drive full open for smoke control purposes.
The EFL and 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