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Fortress Windows
Fortress Windows
Bi-Fold doors are a great option for a grand space. Bi-Folds work best on a large scale. If you have a large doorway with open areas, bi-folds are a perfect choice. The systems offers unmatched support for door panels up to 120kgs.
Bifold doors offer many of the same features that sliding doors do, allowing you to the choice of transforming two rooms into one. This gives you full control over your space and to enjoy how you like.
With bi-fold doors you don't need to physically be outside to feel that sense of freedom, as unlike conventional sliding doors they fold right back meaning there is greater space. You experience the comfort of being indoors while being able to enjoy your outdoor space.
Unlike sliding patio doors, bifold doors take up very little space when opened because they fold up and back on themselves. This also means you will enjoy a larger opening space to pass through since no door has to slide behind an immobile pane.
| Frame profile | Thermo Break Aluminum |
| Hardware | Kerssenberg brand |
| Finish | Akzo Nobel Powder coating |
| Open style | 5-4-1; 5-3-2; 4-4-0; 4-3-1; 4-2-2; 3-2-1; 2-0-2 |
| Glass | All tempered glass, 5+12Ar+5Low-E, 5+12Ar+5+9Ar+5Low-E (Warm edge spacers available) |
Passive house is a building standard that is truly energy efficient, comfortable, affordable and ecological. A Passive House window can reduce heat losses by more than 70% compared to existing double glazed windows.
Our guiding principle is to bring comfortable, quiet, and luxury life to more families. We focus on Thermal break aluminum and wood window systems designed for high-end performance.
