This system works well in high use areas, where constantly changing toilet rolls is not an option. Each roll has the equivilant of 3 domestic sized toilet rolls. Making this sytem cost effective.

 These "matic" toilet rolls are designed to fit the matic style dispensers. These dispensers hold 2 of the toilet rolls one above the other. When the first toilet roll is used fully the core just drops away and allows the 2nd roll to drop into place.