NS
The NS is a standard track system which moves horizontally outside of the clear width.
HS
The HS is a particularly space-saving track system. The door initially opens vertically before moving into the building close to the ceiling.
VS
The VS is a track system in which the door opens vertically.
LS
The LS is the ideal track system in situations where there is limited free space above the door. The system is available in three versions, for head space of 200, 250 or 320 mm.