I used transparent PLA to see when it was time to replace the desiccant. Printed with no supports at 0.16.
The author remixed this model.
While a great design, I noticed the original would tip backwards into the spools, and drag on them. I added a small bump-out to prevent the box from tipping far enough back in the AMS to hit the spools.
Still no supports needed to print, and the bump creates no interference with insertion and removal.