This model easily mounts into Legrand OnQ Metal Media Enclosures. In order install you will need to purchase the grommet plungers. This will allow you to mount a Unifi USW-Flex-Mini.
For the bracket I recommend the following settings:
If there are other models that you would like created based on this mount, please reach out to me with a Printables link, and I will be happy to combine them for you.