Simple filament spool holder

This is a simple filament spool holder I made a year or so ago for my Prusa MK3 & LACK enclosure, I had spent some time before trying to find something like this but couldn't so I so I made one and thought I'd now share it. I and several friends have been using for over a year with no issue.

Mine (pictured) was printed in PLA at 0.2mm.
It can hold rolls up to about 10cm in width.
The spool bar needs to be printed vertically.
It needs 4 screws to secure it down to something.