This is a mounting solution for a cheap LED bar to attach it to a Tukkari TS enclosure.
Installation is simple:
Tukkari enclosure
https://www.tukkari.com/p/ts-acrylic-prusa-mini
LED bar
https://www.action.com/nl-nl/p/kastverlichting-met-sensorlamp/
The author hasn't provided the model origin yet.