This system does not required to fix bottom track.bracket to be mounted in pieces. Cover to be fixed in a continuous length.This system can also be used as a slotted bracket system. Bracket available in 100mm,150mm,200mm.sutable for glass thickness 10mm,12mm,13.5mm.Available in three finishes silver,champagne & wooden.glass height up to 1050mm for 12mm,& 1200mm for 15mm to 17.5mm.