you don't really want something that extreme for case fan intake. you end up "paying" for the cleaner air with higher temps or faster (louder) fans. there are

you don't really want something that extreme for case fan intake. you end up "paying" for the cleaner air with higher temps or faster (louder) fans. there are some newer cases with a fine mesh screen over the intake fans. I have these in my fractal meshify 2, and they seem to work pretty well so far.