Good to know, I'm planning on getting into mining buying used mining cards and staying on top of maintenance on them to keep them alive.

I would say the best way to do it is grab a very large closed case with dust filters, then DIY brackets to mount your cards into the free space. Use fans to keep pressure positive and you'll be good. Your cards will get hotter though, because you might be dissipating 600-1000W inside the case depending on how many cards you use.

4 470/480/570/580s after undervolts should dissipate around 400-450W.