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The folding frames of the PREMIUM KN76 series are the ideal solution for large openings with the characteristic advantage of the space they occupy when fully opened. Folding balcony doors are very common in restaurants, while folding windows are suitable for large openings with a view.

Folding Bellows
With the special leaf movement mechanism, it is achieved, unlike known constructions, the release of almost the entire opening surface.
The folding/sliding bellows are made from the profiles of the Premium KN76 system.
Modern components ensure comfortable handling. With the special leaf movement mechanism, it is achieved, unlike known constructions, the release of almost the entire opening surface.

The better sealing of the opening ones is mainly due to the use of three EPDM rubbers (two on the frame and one on the leaf) in contrast to the sliding ones that use brushes for sealing.

Also, the German perimeter mechanisms that are placed on all leaves of the frame in combination with the safety knobs (with 5-position ratchet, one on each leaf), are the main features that give the balcony door maximum security (WK2 level) and sealing.

Finally, a standard tilt mechanism is placed on the first leaf, making ventilation of your home or business an easy process without the window being fully open.