Racks in the Geberit installation system (sets) mounting rails are attached to special mounting rails screwed to the floor and wall. This significantly shortens the assembly time. However, we must remember, that when we attach two or three racks within one wall and the distances between them exceed 50 cm, it is also necessary to install an additional so-called. corner element. This vertical post must be placed between the racks exactly in the middle of the distance between them.