ALT BF73 Bi-folding Doors

ALT BF73 bi-folding door system is a modern, exclusive option for glazing of premises, that combines panoramic visibility, maximum comfort in use and high performance of energy efficiency and burglar resistance.

ALT BF73 system can be used in both residential and commercial buildings: terrace exits, or in show rooms and conference halls in business centers and hotels.

ALT BF73 Panoramic doors do not take up internal space, free up a large opening and allow you to combine several rooms or a room with the surrounding exterior (terrace, garden, lawn).

ALTBF73 doors are available in outward and inward opening types. At the same time, there is a design option, in which one of the doors is used as the main leaf without involving other bi-folding structures. This allows to implement various types of structures, depending on the requirements and characteristics of the premises.

BF73 Thermally insulated panoramic structures can replace a wall, have a high degree of burglar protection, improve the illumination of premises and save useful space.

About BFRC rating

The BFRC is the UKs most widely used rating council for energy performance in windows and doors. The ‘rainbow’ labels are visible proof of invisible performance, showing our product has been independently verified by experts to perform as promised.

Technical information Opening elements Fabrication benefits Video Color options Documentation More solutions

Up to 3 000 mm Max leaf height

Up to 1 200 mm Max leaf width

44 mm Max infill unit thickness

Up to 120 kg Max leaf weight

Energy

1,2 W/m2*K (DSER of 'B' rating) Triple glazed door

1,6 W/m2*K (DSER of 'C' rating) Double glazed door

Safety

PAS 24:2016 (class D) Burglar resistance

Comfort

class 4 (600 Pa) Air permeability (EN 1026:2000, EN12207:1999)

class 9A (600 Pa) Water tightness (EN 1027:2000, EN 12208:1999)

class A3 (1200; 1/150) Wind load resistance (EN 12211:2000, EN 12210:1999)

1-1-0

2-2-0

2-1-1

3-3-0

3-2-1

4-4-0

4-3-1

4-2-2

5-5-0

5-4-1

5-3-2

6-6-0

6-5-1

6-4-2

6-3-3

7-7-0

7-6-1

7-5-2

7-4-3

8-7-1

8-6-2

8-5-3

8-4-4

9-7-2

9-5-4

9-6-3

10-7-3

10-6-4

10-5-5

11-7-4

11-6-5

12-7-5

12-6-6

13-7-6

14-7-7

Fabrication benefits

Reliability. Premium quality of aluminium profiles and accessories. Hardware from leading brands — ensures durable and comfortable system operation.
The system is equipped with burglar resistant elements and there is an opportunity to use burglar-resistant hardware. ALT BF73 system is certified on compliance with PAS24 (class D).
Different opening types in the system provide wide opportunities for design and application on various objects. Max. possible number of leafs — 14 pcs. (up to 7 leafs in one direction).
The use of adjustable profile on site allows to carry out the final adjustment of the leafs position along the length of the system, which is necessary to compensate for errors that have arisen during the process of leafs manufacturing.
Application of fixing elements sets, connectors, plugs, etc. reduces time and simplifies the process of assembly.
Different opening types in the system provide wide opportunities for design and application on various objects.