Needed a box for my quick change Nextruder Hotend Assemblies. Holds 3 completed assemblies, and 16 assorted print heads. I enlarged the box, but also shortened its height.
Be careful the first time you try to close the case or you might break the hinges.
I also used https://www.printables.com/model/154615-nozzle-holder
and https://www.printables.com/model/516723-prusa-mk4-nextruderv6-nozzle-box
and added a couple more .4 heads. I have included a template for the foam insert in the top cover. It will get you close to what you need. You might have to do a little trimming. It helps keep the pieces in place. Trim the foam about half way down for the depth and also trim along the side with the heads. I marked a line to so how wide to cut.
The author remixed this model.