Systemair FDR-3G-OF - Overflow Fire Damper FDR-3G

Overflow fire dampers up to size 630 mm represent passive fire protection, designed with the help of compartmentalization to prevent the spread of toxic gases, smoke and fire. Standard fire dampers are designed and certified in accordance with EN 15650 and tested for EIS criteria according to EN 1366–2. Fire damper together with its installation form an inseparable part of fire resistivity rating. FDR-3G...OF fire dampers are designed for the installations listed and described in their User Manual. By default, all fire dampers are supplied with an manual mechanism or actuator mechanism, optionally with smoke detector. FDR-3G...OF is equipped on both ends with Grilles that together with the duct extensions cover blade overhangs. Manually Operated Fire Dampers By default, all manually operated fire dampers are supplied with hand crank, optionally with micro switches. In case of fire, the fire damper is closes automatically after the melting of the thermal fuse. After the closing of the damper blade, it is me...