The BFDC fire damper cartridge is designed for the isolation of duct penetrations between fire compartments. Certified to EN 13501-3 and tested to EN 1366-2, it ensures fire resistance ratings of EI 60 S, EI 90 S, or EI 120 S depending on the model. This cylindrical damper guarantees reliable fire protection in round duct systems. Optional kits include end switches (BFDC-S-KIT) and a thermal fuse (BFDC-THERM-72) for safety and automation.