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 - 1500x1200 mm.
Installation of dampers is allowed in ducts that pass through a ceiling or wall, or directly into a ceiling or wall, they can be installed in systems of heat and smoke extraction from multiple fire compartments (multi).
The flaps are designed for systems with automatic activation.
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