Portavant 150 is the ideal solution for maximum clearance width. This multi-track sliding system with telescopic function can be used to stack up to five sliding sashes parallel to each other. The door sashes can be opened with a flick of a wrist: while you slide the first sash, catches with integrated dampers (SOFT CATCH function) ensure that each sash triggers the quiet and gentle sliding movement of the following sash. Portavant 150 multiline can be used for sash weights from 50kg to 100kg and includes as standard a cushioning and retraction system on both sides. As with Portavant 150, the spring force with which the door is retracted after cushioning can be adjusted to the sash weight. This enables the smallest possible opening resistances.