The Retraflex® system is the ultimate in convenient central vacuuming for medium to large homes.
The hose, up to 60ft, retracts into its own piping network but is still used by your central vacuum, not taking any added space within the walls.
We can say, the hose "lives" in its own section of pipe that is installed typically in the basement ceiling area. Sometimes in the attic if the space is very well insulated. A specific rough-in is required in the early stages of new or renovated home construction that involves planning. Additional piping is installed in a large square or rectangle.
Retraflex cannot be used in existing conventional central vac piping with regular vac inlets.