This is a screw down mounting plate for a Mean Well RS-25-5 power supply. It holds the PSU from the side and allows you to fix the PSU from the top.
This design is part of my frame, bracket and holder collection for various boards and components: https://www.printables.com/@a123qwertz567/collections/2632544
I would be happy to see some of your makes posted :)
Source files in the Alibre Atom format is available but the website does not allow the upload. If you need it send me a message.
The author marked this model as their own original creation.