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How to make a box fan filter to clean indoor air of smoke | Interdisciplinary Center for Exposures, Diseases, Genomics and Environment
![Amazon.com: Lasko Air Flex 2-in-1 20-inch Box Fan and Air Purifier in One with MERV10 Air Purifying Filter for Cleaner Air and a Cooling Breeze FF305 : Home & Kitchen Amazon.com: Lasko Air Flex 2-in-1 20-inch Box Fan and Air Purifier in One with MERV10 Air Purifying Filter for Cleaner Air and a Cooling Breeze FF305 : Home & Kitchen](https://m.media-amazon.com/images/I/81vD13+V3-L._AC_SL1500_.jpg)
Amazon.com: Lasko Air Flex 2-in-1 20-inch Box Fan and Air Purifier in One with MERV10 Air Purifying Filter for Cleaner Air and a Cooling Breeze FF305 : Home & Kitchen
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Workshop Air Filtration System Performance Shootout - Including Effective, Low-Cost DIY Box Fan Filtration Systems - SHOP HACKS
![Monkeybrains ISP on Twitter: "DIY air filter system. Box fan ($16), filter ($20), tape. Leave running 24x7! https://t.co/eGJphSGJ0C" / Twitter Monkeybrains ISP on Twitter: "DIY air filter system. Box fan ($16), filter ($20), tape. Leave running 24x7! https://t.co/eGJphSGJ0C" / Twitter](https://pbs.twimg.com/media/Drv-4VlVAAAnMWz.jpg)
Monkeybrains ISP on Twitter: "DIY air filter system. Box fan ($16), filter ($20), tape. Leave running 24x7! https://t.co/eGJphSGJ0C" / Twitter
![DIY air filtration. Just tape 5 20"x20" furnace filters to a box fan. Worked better than I expected. | Garage workshop organization, Garage shop, Garage workshop DIY air filtration. Just tape 5 20"x20" furnace filters to a box fan. Worked better than I expected. | Garage workshop organization, Garage shop, Garage workshop](https://i.pinimg.com/originals/f7/40/ed/f740edd379dc40668b541c90b6567dba.jpg)