Corsi hoped to reach as many people as possible who couldn’t put down hundreds of dollars for a commercial HEPA air filter. The DIY solution, called the Corsi-Rosenthal (CR) Box, was codesigned ...

Low-cost, DIY air purifiers are proving to be just as effective as expensive commercial units at protecting indoor spaces ...

NPR has previously posted a design and guide to building an air purifying cube known as a Corsi-Rosenthal Box, using four 20-inch MERV 13 filters, a 20-inch box fan and two 20-inch panels of ...