FSD60 with airfoil multiple blades are recommended in smoke management and smoke control system with pressures up to 1 k Pa and velocities 20m/s.

FSD 60 meets the following international standard:

• BS476 Part 20  -  4 hours FRP
• UL555  -  1.5 hours FRP
• UL555S  -  Class I leakage
• Smoke extraction  -  Continuous operation at 250degC for 1 hour

The FSD60 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 Smoke damper. It features:

• Rated to 3,000 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.
• 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.