Folding (bi-fold) doors
Folding (bi-fold) doors
Application:
Used in many markets, in residential and commercial construction, in external structures, as terrace doors.
The folding door system offers extensive possibilities for original space design. When closed, the doors create aesthetic glazing which, when opened, can provide direct access to a terrace or garden.
Folding doors are most commonly used in hotels, restaurants, shops and private houses where there is a need to open an entire wall to create more usable space.
The system is also used in conservatory constructions as a fully foldable element for the summer season.
It works perfectly as a wall separating a swimming pool from the garden – closed in winter it provides full thermal insulation for pool users, while opened in summer it allows full use of the open space.
Characteristics:
Doors made of window-door profiles with folding capability
Window threshold (frame type) or low threshold (depending on the system). In the CF77 system there are four threshold solutions: with high airtightness parameters, intermediate airtightness parameters, with a low threshold, and even with a flat threshold.
In the CF77 system threshold, a trolley (the guiding mechanism of folding door sashes) moves, transferring the weight of the movable structures. In folding constructions based on window systems, the trolleys move on guides screwed frontally to the frame.
Depending on requirements, doors consisting of 2 to 8 sashes can be manufactured.
Opening (folding) inward or outward.
The maximum sash dimensions in the CF77 system are Smax = 1200 mm, Hmax = 3000 mm, weight 120 kg, and the maximum construction width is 7000 mm. In standard window systems, the maximum sash dimensions are Smax = 930 mm, Hmax = 2430 mm, weight 80 kg, and the maximum construction width is 6000 mm.
Equipment:
Standard: inside handle.
Options: handle with key or double-sided handle with cylinder (in the active sash).
Advantages:
– space saving inside the room,
– spacious entrance after fully opening the doors,
– available in many different opening and folding configurations depending on customer needs.
Opening methods
