System of vertical partitions comprising single glass panes and solid panels arranged continuously, thereby minimising the presence of vertical uprights. Light weight and elemental appeal characterise this product. M1 and M3 offer endless possibilities for constructing spaces intended for the variuos tasks that the modern style of working imposes; staff offices, open-plan offices, meeting rooms, executive or high-profile offices, all find a suitable solution in this collection. M1 and M3 were designed to integrate with the other wall panels in the XW system.