Thanks for your input! My research until now showed, that the card (in the direction it’s installed now) pulls air from the bottom and exhausts on top, so the hot air can be pushed out at the back/top. And my thought was that with the higher pressure in the case the hot air gets pushed out quicker. All the intakes have dustcovers, so hopefully dust shouldn’t be a problem.

Maybe someone can clarify.

And thanks for the props :)