Question What's a good filter material?

ComputerWhiz305

Honorable
Jun 25, 2014
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The front of my PC case has a ton of empty external drive bays, all of which have covers that are list vents. Then there is a vent on the top and side of my case. All of these vents are unfiltered, so I find that a decent amount of dust accumulates in my case after a fairly short period of time.

I'd like to put filters on the vents to prevent dust and debris from entering the case. When I look for case filters on Amazon, I get little squares that are designed to be attached directly to the fans, but that's not what I want. I want a sheet of material that I can customize to fit the non-standard vents on my case, without disrupting or limiting the air flow in the case.

What's a good material that I can just buy a sheet of?
 

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