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Fire-resistant double-leaf sliding doors are designed to separate fire compartments and are particularly suitable for locations where there is insufficient space to accommodate a conventional single-leaf sliding gate on one side of the opening. The two gate leaves open from the centre in opposite directions, reducing the lateral space required on each side of the opening.
These doors are primarily used in industrial and production halls, warehouses, logistics facilities and technical installations. Depending on the specific design, they achieve fire resistance ratings from EW 15 to EW 120 and EI 15 to EI 120.
The gate leaves consist of individual steel slats with fire-resistant infill, each independently suspended from a trolley. Both leaves travel along an overhead guide rail mounted above the building opening and slide in opposite directions when opened. The standard surface finish is galvanised steel sheet, with optional colours available according to the RAL colour chart. The self-closing mechanism operates using a counterweight system, while a hydraulic speed regulator ensures a controlled and consistent closing speed.
Depending on the project requirements, the gate can be equipped with:
Each gate leaf consists of multiple individual steel slats, each 300–1,100 mm wide. The slats are interconnected using a special joining system that leaves no visible protrusions or screw heads. The total gate leaf thickness is 62 mm. Each slat has a surface made of 0.75 mm thick galvanised steel sheet, which is fully bonded to the fire-resistant infill. The end-stop profile and labyrinth profiles are galvanised as standard. All components can also be supplied with a surface finish in a selected RAL colour.
Each individual slat is independently suspended from a trolley equipped with ball bearings, allowing smooth movement along the overhead guide rail.
The guide rail consists of a special cold-rolled, galvanised C-profile, mounted to the wall using steel brackets. The entire guiding system is protected by a galvanised sheet metal cover, which can also be supplied in a selected RAL colour.
The floor guide is positioned outside the clear opening, to the side of the gate.
Each gate leaf is equipped with a tubular handle on the side facing away from the wall and a recessed shell-shaped handle on the wall-facing side. The end position is secured by an end-stop buffer mounted on a bracket. Automatic self-closing is provided by a counterweight system, with the counterweight shaft enclosed in galvanised sheet metal. A hydraulic speed regulator ensures a uniform closing speed. The gate is also equipped with a mechanism designed to facilitate easy manual operation during everyday use.
The gate can be installed on the following supporting structures, subject to the applicable structural and fire protection requirements:
