+1 for this. I've soapboxed about air filters in this thread before, but it's worth repeating. Cerberus is a case designed for airflow. Airflow is a compromise between CFM and noise. Intake air filters
significantly shift your CFM-vs-noise curve downward. It's a huge factor in PC performance, but it seems like no one wants to talk about it or study it, even the people who obsess over which CPU cooler is 1 degree C better than the others. (This is true for water cooling also. In a water cooled PC, it's still airflow that removes heat from the case, and airflow causes most of the noise.)
By far the most significant factor in filter airflow restriction is porosity or % open area (see
here and
here). More open area, more airflow, less noise. Most filter mesh is 50% open area or less, unless you specifically go looking for high porosity materials. The problem is, as hole size gets smaller, the mesh filaments have to get smaller to achieve high porosity, which makes them fragile. Steel works better than nylon when you get down to dust-filtration-sized holes.
My favorite filter material is this epoxy-coated steel mesh from Mcmaster-Carr:
https://www.mcmaster.com/#9641t14/=1a72x78 (24 mesh count, 830 micron hole size, 62% open area)
It's sturdy, it's black, it's magnetic, it holds shape but it's bendable, it cuts with heavy scissors, and it keeps out fibrous dust just fine. It doesn't completely keep out fine powdery dust, but in practice, not much gets through, and that size of dust doesn't clump up and is easy to blow out with compressed air. (I vacuum my filters every couple months, and they're furry. I've only blown out the case maybe twice in three years, and it barely needed it.)
I also just found this stuff, which looks incredible from the specs, but a little too expensive for me to order on a whim:
https://www.twpinc.com/wire-mesh-ma...0-mesh-woven-stainless-high-transparency-0012 (100 mesh count, 224 micron hole size, 79% open area!)
If it's sturdy enough to work with and survive dusting/vacuuming, this might be the ultimate filter material. (If anyone tries it, please report back.)
I've never been able to find specifics on Demci's filter material, but I would guess it's under 50% open area. They state that the hole size is 100 micron. Good for cleanliness, bad for airflow.