Remix of these two models:
https://www.printables.com/model/37069-sleeve-case-for-raspberry-pi-b-pi-2
https://thangs.com/designer/uigghjghjlghjghghj/3d-model/Gridfinity%2520Ender%25203%2520Baseplate%2520Sidecar-61668
The author remixed this model.