| ▲ | bethekidyouwant a day ago | |
a box fan and a furnace filter. | ||
| ▲ | ValleZ a day ago | parent | next [-] | |
It works really well and even more - it works better than any purifier even if you just duct-tape the filter you have to a box fan. | ||
| ▲ | poszlem a day ago | parent | prev [-] | |
To people who think this is a joke, it isn't: https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box | ||