2U plate to mount a full ATX power supply in a 10 inch rack cabinet.
Do not print in PLA. The heat and the weight WILL eventually deform it.
Requires a 10"+ build plate (254mm). A Prusa i3 or an Ender 3 is not big enough.
I printed it in PETG with the front plate laying on the bed and no supports.
The author hasn't provided the model origin yet.