The BERTRAND folding doors are the choice recommended for customers who value extraordinary solutions. The system is ideal for large spaces, providing users with a wide thoroughfare. The wings, forming an accordion-fold, allow you to open up on your garden, terrace or eliminate the border between rooms. The entire structure can be wide up to a dozen meters or so. This solution works well in public and commercial buildings. Folding doors can be made in various technologies (aluminium, wood).