This is a set of brackets to mount a QNAP QSW-M2116P-2T2S Ethernet switch in a Leviton 47605 Structured Media Enclosure. With a bit of work on the model in Fusion 360 you can probably adapt them to other network devices.
You'll need to print 4 of the brackets, two each of both types.
The holes in the brackets fit the hole pattern on the back side of the Leviton enclosure. You'll need to buy a set of the Leviton 47615-NYL Push Lock Pins to attach them to the enclosure.
Designed in Fusion 360, model available here: https://a360.co/49FNNrk
The author marked this model as their own original creation.