IKEA Stuva headphone mount (no supports)

This headphone mount is made for the IKEA Stuva desk-bed as a way to keep stuff off of my workspace. The space between the 2 stabilizer tabs is 2 cm, and the length of the tab that holds the headphones is (roughly) 3.3cm.
It was specifically made to fit on the bed slats that are overhead when I sit at my desk, but I am fairly certain that it will fit on other things as well.
The text on the bottom reads "Sanders" as a literary joke for my own amusement, but it's not obvious when it's installed