This Cheap Box Helps to Keep COVID at Bay

Covid-19 Transmission graphic

The desinergs of the Corsi-Rosenthal box wanted to do something to help places deal with COVID-19. As we all know, the virus is airborne and spreads easily in interior environments. With this in mind, Richard Corsi, and air quality expert, and Jim Rosenthal, CEO of a air filter company created a simple box made up of filters and a single box fan. This cheap air cleaning box can be built at very low cost (filters and a fan) by people with no building experience.

Instructions to build the DIY box fan filter can be found here.

Within days, tinkerers and air quality engineers alike were constructing their own Corsi-Rosenthal boxes and sharing the results on social media. A vibrant conversation emerged on Twitter, blending sophisticated technical analysis from engineers with the insight and efforts of nonspecialists. 

By December, hundreds of people were making Corsi-Rosenthal boxes, and thousands more had read press coverage in outlets like Wired. In different corners of the world, people tweaked designs based on the availability of supplies and different needs. Their collective improvements and adaptations were documented by dedicated websites and blogs, as well as news reports.

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