Fan Mount Raspberry Pi 4 40mm Noctua with DIN-Rail Mount
You need:
6x M2x10 Self Tapping Screws
4x M3x12 Screws
4x M3x4 Threated Inserts
Other Mod works with that:
https://www.printables.com/de/model/477890-voron-20x10-raspberry-pi-mount
DIN-Rail Mount from:
The author remixed this model.
Better Mount