Gridfinity Box for Extruder 4u Stackable

This is a regular stackable version of my extruder storage box design. Note 1: Except for a quick test print, I do not use it myself. Happy to hear some feedback if the design works for you. Note 2: There is also an improvised lid on the second build plate. It can be used to carry around the box without losing parts. You probably do not need it if you plan to stack the boxes or put it in some container. Just delete it if you do not need it.