good cheap dust filtered case (looking for 1)

[skulldriver101]

im looking for a case with really good dust filters. its going in the shop room of my school as a present to my favorite teacher. with all the dust he has to replace the plasma table computer every year because it dies. so our plasma table pc is never a good one. it cant have the gamer astetic, just needs good easy to clean filters. size doesnt matter im going to build the pc around the case not vice versa.

[JJOATz]

You could make some with nylon which are much finer than what you will get on (virtually) any case. They are washable too. I made some for an old computer. They aren't pretty, but they stop way more dust than most filters I've seen.

[Enderman]

You have two options.

1) easy to clean filters

2) good filters

Not both.

[Mira Yurizaki]

If your fan mounts are on metallic panels, you could opt for magnetic fan filters. Though this depends on how easy or hard it is to get there. In my case (pun totally intended), I can slap them on the outside, so cleaning them is simply peeling them off, washing them, and sticking them back on.