This case is a remix from gurnarok's Pi 4 DIN rail case.
It only includes the lower half of the case in order to improve cooling of the Pi.
I also replaced the DIN rail mounts with two VESA 75x75mm mounting holes on one side, so it can be mounted to any monitor, or in my case an SSD holder.
The FreeCAD project file is included, so you can modify it more easily.
The author remixed this model.