All regular sizes from 1x1 (width x depth) units to 10x5 units for the 55, 80, and 150 series of boxes.
No supports needed.
As of version 2.9.3 PrusaSlicer does not bridge the inner cutouts well. Add a modifier box over the cutouts that overrides the bridging angle.
Keep in mind the thermal expansion of the print material for the bigger inserts. These values work for me:
The author marked this model as their own original creation.