Corsi-Rosenthal Box
... that the Corsi-Rosenthal Box is a homemade air purifier that was designed during the COVID-19 pandemic as an alternative to more expensive air purification systems?
... that the <b id="mwBWE"><a class="mw-redirect" href="./Corsi-Rosenthal_Box" id="mwBWI" rel="mw:WikiLink" title="Corsi-Rosenthal Box">Corsi-Rosenthal Box</a></b> <i id="mwBWM">(example pictured)</i> is a homemade air purifier that was designed during the <a href="./COVID-19_pandemic" id="mwBWQ" rel="mw:WikiLink" title="COVID-19 pandemic"><span about="#mwt64" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"COVID-19"}},"i":0}}]}' id="mwBWU" typeof="mw:Transclusion">COVID-19</span> pandemic</a> as an alternative to more expensive air purification systems?