Circular fire dampers serving as a closure of air ducts in case of fire.
The fire dampers are designed for circular air ducts with a diameter of 100 - 315 mm.
The dampers are suitable for installation in all common building constructions, they can be installed in fire separation construction with the axis of the sheet vertically and horizontally.
Activation of the damper in the event of fire is ensured by a 72 °C thermal fuse as standard (95 °C on request), closure of the damper after activation of the thermal fuse is ensured by a mechanism equipped with a closing spring.
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