Corsi-Rosenthal air filter box for 80mm fan
thingiverse
This is a small Corsi-Rosenthal box to clean the air in a relatively small space like a bedroom. I used an activated charcoal filter sheet similar to what is in the link below and it works pretty well. It uses an 80mm pc fan which should blow outward from the box. You can probably scale it to whatever size you need and just drill or somehow adjust the screw holes. I tried to make it work using paper air filter material from a household hvac system but it didnt turn out too well. https://a.co/d/aOv1Tyk
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