I like those stackable boxes, but some times I want them to have more separate chambers so I made this separator wall!

The title picture included a set of hex keys for size reference.

Just print it in the default orientation, no support needed!

My box has “Kappex” written on them and measures about 87mm*136mm on the inside.

Not sure if there is a standard with those, lemme know in the comments! I can add versions with common box dimensions :) Or you can simply try to scale the stl in the slicer to fit your box!