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Made a “Corsi Box” filter for my daughter’s classroom. It’s a box fan pulling air through 4 MERV 13 filters, which are fine enough to pull virus-laden particles out of the air. #corsibox #corsirosenthalbox @CorsIAQ @JimRosenthal4 
For anyone who's interested in doing the same, here's some helpful links -
wgbh.org/news/local-new…
schools.forhealth.org/diy-air-cleane…
texairfilters.com/a-variation-on…
wgbh.org/news/local-new…
schools.forhealth.org/diy-air-cleane…
texairfilters.com/a-variation-on…
The filters can be pricey because they're hard to find and high quality (MERV 13 or higher) is important for proper filtration. I ended up going with 20x25x5 filters instead of the 20x20x4 recommended in most tutorials because they were easier to find in stock.
💡How to save kids lives & prevent hospitalizations with $55–make your own Corsi Box!! Seriously—if you don’t have a HEPA filter, then do this!👇
📌A motto in environmental health—THE SOLUTION TO (#coronavirus) POLLUTION IS DILUTION (#ventilation) & FILTRATION (#HEPA /#CorsiBox)
📌A motto in environmental health—THE SOLUTION TO (#coronavirus) POLLUTION IS DILUTION (#ventilation) & FILTRATION (#HEPA /#CorsiBox)
2) Technically this is a “Corsi Box” with 5-6 MERV-13+ filters arranged in a cube like this below 👇… I’ve been recommending this for over 6 months! Air disinfection is critical!
3) we know for certain that air disinfection (with either a portal HEPA filter or a Corsi box 📦 comprised of MERV13 filters in cube) works. Studies support the benefits of HEPA filter. The key is to get them into schools — if school won’t buy it—then just buy & donate to teacher
