156 marker holder all one level

I have a TON of markers and too many boxes to open when I need them.  All the ones I was finding either weren't big enough, or they were multi level.  I just wanted a large one level holder, so here it is if useful to anyone else.  Print in place, no supports, might suggest a brim if you have warping tendencies.  

Design by PJs Printed Pretties on MakerWorld (license: CC0).