Not sure about the exact model. This fits perfectly in mine. Check the dimensions.
Original is available and modifiable on OnShape at https://cad.onshape.com/documents/b9c7b4e0f6daa0bcbce87470/w/36dd233d3bd98cdb29e2b10c/e/a2ea2e034e415ddb01743468
This is my own design, you can use it, modify it and distribute it for whatever purpose you see fit, with no implied warranty.
This prints without support; the overhangs are bridges and print very nicely.
In the pictured print, I used the default perimeters settings. As a result, the thin, vertical walls of the box contain infill, which is visible with transparent material. Bump it up to 4 perimeters, the plastic usage increase is minimal, and you can save an hour or two on printing and get a visually better result hopefully.
Printed using PrimaSelect clear PETG. Took about 14h on my Mk3S at "0.20mm SPEED".
The author hasn't provided the model origin yet.