• Standard Material: Galvanized steel sheet with insulated damper cover.
• Prevents flame and smoke advancing at air ducting system, during a local fire.
• High resistance against corrosion.
• Two hours resistance at 1000ºC.
• Installed on wall partitions/penetration holes where ducting pass through.
• Has four models: Standard Model (FD-143), Circular Model (FD-243), Servo-motorized Model (FD-343), Servo-motorized Circular Model (FD-443).
• Manufactured with electrical driven spring return actuator including electrothermal fuse set at 72ºC (+/- 4 ºC), or manufactured with manual including mechanical thermal fuse set at 72ºC (+/- 4 ºC).