A headset holder in various widths from 20 to 50mm fitting IKEAs KALLAX type shelves in dimension and modern style. It is to be fixed to the shelf by two countersunk bolts with a diameter of 3.5 or 4 mm. When the holder is not needed anymore, as the distance of the two bolts was chosen identical to the original wall fixture holes on KALLAX type shelves, my KALLAX hole blinds can be used herefor as well.
Reminder: Be aware that "IKEA-wood" has mechanical properties somewhere between paper and air both when mounting as well as when putting load on the provided holders!
The author marked this model as their own original creation.