This is hangers for a monitor to use as wall panel for Home Assistant. The monitor it is designed for is Elecrow 10 Inch 1280 * 800 Touch Screen Monitor, used together with a Raspberry PI.
See the following blog for more detail:
https://hapanel.blog.rudhs.se
I have printed using a Creality Ender 3v2, it works without supports, but will be a bit rough on the, not visible, underside.
Print two, turn one upside down.
Plattan-2.stl | 23.5KB |