Classical razor blade boxes storage 3 heights & stackable option

I've been waiting for a reason to design a hinged object for a few months now, but I didn't get any good idea until now.
Then I've personally switched to classical razor blades for shaving a few weeks ago and I was struggling to keep my 10 blades boxes in an orderly fashion.
I then got this design idea to store the blades boxes.

The principle behind this storage is to get an immediate visual view of the brand/model of the blade box and to open it easily. Once closed, it should be locked in place and require a little effort to open. I also made different heights and stackable option so I can sort blades by type or brand.

The whole storage, including hinges and locks are made in a single print and has been successfully printed at 0.1mm up to 0.15mm. I didn't try 0.2mm as I suspect it will solder hinges and door to the frame but you can try it if you want and get me updated about the result.
I didn't use any support under or within the storage to save matter but it may require po