About this 3D model

Mounts on the wall. Holds two 3/4" or 20mm dowels to hold filament rolls. Mirror the model to get other side. Printed in orca slicer's 20mm strength with very few modifications. Added a dowel cap that you can glue on to the extra part of the dowel for looks and to prevent the dowel from slipping through. Note that the dowel cap is 19.5mm long because that is how I cut my dowels and installed my braces. Yours will probably be different.