Computermate 5.25" Disk storage organizer insert

I have a couple of old Computermate 5.25" disk keepers that I use to store both floppies and CDs. Over time, the original organizer inserts have broken. This is a quick re-modeling of one of those organizer pieces. Seems to be a bit tight, I should probably shrink it just slightly later, but it works fine for now.

No special printing settings needed here; it's entirely flat.

FreeCAD file included, because why not?