3 ms·
Put a 1-inch filter over a $20 box fan https://www.youtube.com/watch?v=kH5APw_SLUU https://www.youtube.com/watch?v=kH5APw_SLUU
by dralley 6y ago
Put a 1-inch filter over a $20 box fan
https://www.youtube.com/watch?v=kH5APw_SLUU https://www.youtube.com/watch?v=kH5APw_SLUU
- DanBC 6y agoHow does a filter help with gases?
- strangegecko 6y agoHEPA filters only help for particulates. For gases you need activated carbon (usually more than is used in commercial air purifiers) or something else.