overview:
The VDS folding door is composed by two structural elements:
The interior structure networked in galvanised steel with anti-corrosion treatement externally revested in plated artificial leather with high resistence and the suspension system with anodized aluminium track with rollers in akulon, including aluminium handles and a magnet lock.
No need of track in the floor.

other door systems available:
 Henderson kits
 internal sliding door systems SA&F
 folding doors in PVC
 tempered glass doors

For further information visit VDS, website threw this link.