dust/air filters

One problem I have with all computing gear is the amount of dust build up, especially if there are fans moving air around.

I would like to have brackets to hold standard size dust screens or air filters.

The [CR filter](https://en.wikipedia.org/wiki/Corsi-Rosenthal_Box) community has been doing some neat stuff using standard 1" furnace filters. It seems you can get a 10x10x1 filter, but not much smaller. That might work for the top/bottom/sides. There are already a bunch of 3D printed designs for holding these 1" filters that might provide inspiration.

The PC Builder community has some smaller stuff, usually also designed around standard fan sizes. That stuff might work for panels actually mounted in the rack.

These racks will be light enough to take outside and blow out with compressed air, but something to filter the incoming air that was easily cleaned or replaced would be pretty nice.