For variable and individual interior fittings of the cabinet frame on the outer assembly level. Benefit: Simply hook into the system perforation from the outside and screw in. System perforation on all four sides. If side walls are already mounted or cabinets are lined up, the installation of the system chassis can also be done from the inside of the cabinet. Installation options: On the door frame, on identical system chassis to each other, on the rail for interior fittings AX for expansion in cabinet height and width.