The mount prints easily without any support standing up.
It is designt to fit with the 3030 B-Type aluminium extrusion with a 8mm groove.
To mount it on the extrusion you need a M6x12 DIN6912 (commun size of srews to mount 90° brackets to the extrusions) and a hammer nut.
This is the lamp for what it is designed for:
https://www.ikea.com/de/de/p/naevlinge-wand-klemmspot-led-schwarz-10408273/
The author hasn't provided the model origin yet.