With the Micro Swiss direct drive extruder on the Ender-3 printer the Z-axis is somewhat reduced. With this cable chain mounts the cables and filament are running in front of the frame so you can achieve 200mm build height.
The top and bottom parts are screwed together with M3 screws/nuts after the two nuts on the top oart are mounted at the bottom for the cable chain.
The author hasn't provided the model origin yet.