After you select the head station, you can put the IO modules together easily in any order. The modules consist of two side plates with the PCB inserted in between. The front connector is swiveled directly onto the PCB.
DIN rail housing, Lateral element, Required to terminate the various modules and to protect the bus connectors, width: 6.9 mm, height: 100 mm, depth: 80 mm, color: light gray (similar RAL 7035)