So it seems.BaronVerde wrote: ↑Sat, 24. Jul 21, 00:59In order to have flow through the case we need some fans suck in, some fans blow out. Flow through the case inevitably trivially means dust inside, so we want to protect the intake fans with filters, specifically the ones on the bottom if the case is standing on the floor. Further details depend on the case and setup.
I have had something under the case to provide more airspace. This example has small blocks (even though it isn't on floor): https://drive.google.com/file/d/1Yg3dsM ... sp=sharing
Frankly, pictures of cases directly on fluffy carpet give a bad feeling.
The Nox Hummer Nexus has filters on top and side with magnets. Easy to take out and clean. https://www.youtube.com/watch?v=QR_MwH6Zn3k
Filter at bottom does not look as easy: https://api.nox-xtreme.com/thumbnails/p ... ack_15.png
The front is closed with front fans drawing air from side slits of the front. There seems to be no filters or good place for one.
Fractal Define in my photo has a front door. There is front filter. With door closed the air flows from side slits just like in Hummer Nexus. The cooling improves, if the door is open (at slight cost of quietness.).