Home / Aluminium / MB 86 FOLD LINE



The MB-86 FOLD LINE HD system is a solution that is very convenient for everyday use, while having high technical parameters and making it possible to make large-size constructions. Folding doors can be opened both outward and inward.

MB-86 FOLD LINE any arrangement of leaf configurations. It is a modern product, designed to meet the high requirements of users, architects and investors.

Exterior folding doors give a lot of freedom to users. They can easily take advantage of favorable weather conditions and almost literally remove the barrier between the interior of the building and its surroundings. Such doors can therefore provide an excellent, wide passage from the house to the terrace, or connect a cafe or restaurant with its outdoor area used seasonally.

Features and advantages of the MB-86 FOLD LINE system:

  • Three-chambered, heavy-duty aluminum sections with a design depth of: 86 mm for frames and 77 mm for door leaves
  • corner and also panoramic solution available – possibility to assemble a structure with 8 wings
  • the central chamber of the sections equipped with thermal breaks of 24 mm for frames and 34 mm for door leaves, which translates into high thermal insulation of the structure
  • specialized hardware dedicated to the MB-86 FOLD LINE HD system, ensuring comfortable functioning of door leaves with a maximum weight of up to 120 kg
  • large permissible dimensions of the structure, allowing the construction of doors with a leaf height of up to 3000 mm and a width of 700 to 1200 mm
  • the largest number of threshold solutions, including. with a swing seal or convenient to use – with a concealed threshold
  • a large range of glazing from 13.5 to 61.5 mm, allowing the use of both single-chamber and double-chamber packages, including specialty ones: with increased acoustic insulation or burglary resistance
  • Significant scope of compatibility of the MB-86 FOLD LINE HD system construction with the well-known and appreciated ALUPROF MB-86N window and door system: connecting profiles analogous to MB-86N, as well as some sections, gaskets and accessories common to both systems.

Features of MB-86 FOLD LINE


Water resistance

Up to class 9A (600 Pa), EN 12208

Air permeability

up to class 4, EN 12207



from 1.5 W/(m²K) For a door with a leaf size of 0.97×2.4 m with glass Ug=0.5 W/(m²K) with a warm spacer



2 years warranty on fittings as standard, 5 years on profile


Colour palette

Glass catalogue

What we offer in standard?

3-point locking system

Leaves up to 400 kg

Possibility to embed in the threshold to 48 mm

Leaf sizes over 3x3m

What else can we offer?

Leaf weight up to 600kg

Opening support


narożne przeszklenia

Glass Corner

The presented photos are for reference only. Due to the display technique and the conditions of taking photos, the actual appearance of the products, including their color, structure may differ from that presented on the website. The content of the website is informative and does not constitute an offer within the meaning of the Civil Code. Due to the continuous improvement of products, the information presented on this website may change.