Description
Remix of a Remix. ScaryPug designed a brilliant 80x25mm fan mount remix of the also great Ender 3 v2 8010 fan housing/mount by TerraVestra. Since the scaryPug design was extended for a 80x25mm fan, I'm modifying back to match the TerraVestra 80x10mm design depth. (I have a 80x10mm fan which is great for this application because it came with a wire grill/guard that can be used to keep the wires from touching the fan blades.)
I've also cleaned up the STL file (fixed some gaps and misaligned surfaces) and replaced the threaded holes from the scaryPug version with straight holes. I find that screws thread themselves just fine into unthreaded holes in PLA and removing the threads cuts down on model complexity. The 80x25 STL is included in the parts files.
Details
There are two versions of each size. Each one will mount one 80mm fan and one LM2596 module.
80x10 mount
80x10 mount w/ honeycomb grill
80x25 mount
80x25 mount w/ honeycomb grill
Printing Notes
ScaryPug's design is the first model I had encountered…

I found those really nice designed and remixed PSU Covers for the  Ender 3 V2.
The original design used a 92mm Noctua A9x14 Fan which was just screwed into the cover, the remix I am referencing added a cable guide and a fan holder but uses a 80x10mm fan.
My design merges original and remix to fit a Noctua A9x14 PWM fan to the remix.
The design has air vents and uses a bigger fan compared to the original Cover of the PSU thus more general ventilation takes place even when the fan is not spinning. So don't freak out if your fan is not spinning as long and often like the original one does.
A user pointed out that clearance is too small on some power supplies thus the part is bulging a little bit. Please make sure you have enough clearance before printing.