ALT BF73 Bi-folding doors

ALT BF73 Bi-folding doors
Object made of ALT BF73 Bi-folding doors
ALT BF73 is a modern panoramic bi-folding door system for private homes and commercial buildings. The solution combines high levels of energy efficiency, burglary resistance and ease of operation.

It is therefore well suited to café and restaurant terraces, showrooms, meeting rooms in business centres and hotels.

The folding configuration — with the leaves opening to one or both sides of the opening — can be selected to suit the layout of the building.
Opening types
Bi-folding

System overview

Adjustable frame profile

Allows the position of the leaves to be adjusted along the length of the system to compensate for possible installation tolerances. Adjustment is carried out on site.

  • Adjustable frame profile
  • Heavy-duty hinges
  • Hidden threshold
  • Large-dimension leaves
Adjustable frame profile

Allows the position of the leaves to be adjusted along the length of the system to compensate for possible installation tolerances. Adjustment is carried out on site.

Heavy-duty hinges

Hardware from European manufacturers is designed for panoramic structures with up to 14 active leaves and a total length of up to 16 m.

Hidden threshold

The thermally broken hidden threshold profile provides convenient access while maintaining a high level of weather tightness and thermal insulation.

Large-dimension leaves

The profile characteristics allow leaves up to 3 m high and 1.2 m wide to be fabricated.

up to 3 000 mm Max leaf height
up to 1 200 mm Max leaf width
up to 120 kg Max leaf weight
44 mm Max. infill unit thickness
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 9A (600 Pa) Watertightness (EN 1027:2000, EN 12208:1999)
class 4 (600 Pa) Air permeability (EN 1026:2000, EN12207:1999)
class A3 (1200; 1/150) Wind load resistance (EN 12211:2000, EN 12210:1999)
powder coating

1. POWDER COATING

  • exclusive collections (Futura, Precis, Anodic);
  • variety of surface types (glossy, matte, textured);
  • innovative antimicrobial BIO-coating option.
anodizing

2. ANODIZING

  • 9 standard colours;
  • possibility to choose different surface treatments (chemical etching, bead blasting, brushing).
wood-grain effect

3. WOOD-GRAIN EFFECT

  • 5 woodgrain options.

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for authorized users.

AUTHORIZATION

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Compatible solutions

Vertical zip screen

A multifunctional solution providing protection from intense sunlight, overheating and insects. The Vertical ZIP Screen integrates seamlessly with the ALT BF73 system and complements a wide range of architectural styles.

Learn more
Vertical zip screen

Drainage channels

The drainage channel system is designed for use with panoramic bi-folding doors. It ensures effective water drainage while maintaining the specified threshold height.

Vertical zip screen