How goes it my dudes, I have attached a couple files for replacement PSU covers on the Fractal Meshify C for better fan flow direction (in my opinion). They have the intent of directing more airflow into you graphics card than the stock fan placement options. I have only printed the main version (all pics) and was happy with it so the experimental version has yet to be printed (not sure if it works, was designed for an Arctic 240 rad)

This was printed on a modified Ender 3 V2 with Inland (Microcenter) black PLA+, I forget the infill (I trust your judgement), and there werent any supports (I hate them and will avoid if I can, there was a bit of warping on the higher ring sections though so use that info as you wish)

Im bad at explaining stuff so if you have questions feel free to reach out. Im not the fastest to respond but ill try to help. Happy printing!