
Door system

MB-86 FOLD LINE HD
ALUPROF MB-86 FOLD LINE HD is a high-performance aluminium folding door system designed to create wide, open transitions between interior and exterior spaces. Its large glazed leaves fold neatly to the side, combining impressive dimensions with excellent thermal performance, durability and smooth operation. With leaves reaching up to 3 metres in height, it is an ideal solution for modern homes, terraces, restaurants and commercial spaces where maximum openness and natural light are key.
Key features
1,10 W/(m²·K)Thermal insulation
3Number of chambers
86 mm/77 mmInstallation depth (frame/sash)
13,5-61,5 mmGlazing thicknessTechnical Parameters
| Profile manufacturer | ![]() |
|---|---|
| Product type | MB-86 FOLD LINE HD |
| Material | Aluminium |
| Installation depth (frame/sash) | 86 mm/77 mm |
| Number of chambers | 3 |
| Thermal insulation | 1,10 W/(m²·K) |
| Reference value | 0,5 |
| Reference size | 970 x 2400 mm |
| Thermal variant | ✓ |
| Glazing | |
| Glazing thickness | 13,5-61,5 mm |
| Glazing unit | Ug = 0,5 W/(m²·K) |
| Door glazing | ✓ |
| Performance | |
| Air permeability | Class 4, EN 12207 |
| Watertightness | Class 9A (600 Pa), EN 12208 |
| Wind load resistance | Class C1, EN 12210 |
| Impact resistance | Class 4, EN 13049 |

MB-86 FOLD LINE HD
Open up more. Live without limits.
- Large folding leaves create wide, almost unobstructed passageways and panoramic views.
- Support leaves up to 3000 mm high and 120 kg, allowing impressive architectural dimensions.
- Combines strong aluminium construction with excellent thermal insulation, airtightness and weather resistance.




