There is an improved remix here.
This is a remix of nikutama05's (on thingiverse) filament storage box that holds 4 spools of filament with these changes:
I added a new model "plugs" that are various heights to slide into the side supports and hold the rods tight and press the side supports against the storage box walls. This keeps the rods from shifting around. You'll need to print:
2x Base2
Supports: No
Resolution: 0.2
Infill: 20%
The author marked this model as their own original creation. Imported from Thingiverse.