Square dampers for heat and smoke extraction from the fire affected section.
The flaps for heat and smoke extraction are designed for square air ducts of sizes 200x200 - 1200x1000 mm.
The dampers can be installed vertically or horizontally, in a group above or next to each other.
The damper leaf is operated by moving the leaf to the open position on signal, and the damper is in the closed position during idle time. The damper is supplied with a 24 V or 230 V actuator as standard.
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