These are the boxes for Kaufland/Lidl wall organizers.
They are roughly in the dimensions of original boxes, but my goal was not to replicate them and make them stackable, but to replace/print more of the chosen size. Thus, they are not stackable neither with themselves, nor the original boxes, but serve well the purpose of being hung on the wall organizer.
You will need supports to print these, however, you don't need them on the full length if you don't mind some sagging. I've printed mine with the support blocker used in PrusaSlicer, as in the screenshots.
Another option is to print them upside down, without supports at all, but you'll get some sagging inside the box, which might be problematic during later use. I did it, succeeded and cut the print time in half, but the filament strands eventually became loose.
Printer Brand: Prusa
Printer: I3 MK3S
Rafts: No
Supports: Yes
Resolution: 0,2-0,5
The author hasn't provided the model origin yet.