Corsi–Rosenthal Box
Videos
The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four or five HVAC particulate air filters that form a cube and a box
An example of a homemade unit
Richard Corsi in 2022
Students with decorated Corsi–Rosenthal Boxes at a competition at University of California, Davis in 2022
N95 respirator
Videos
An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health N95 standard of air
Corsi–Rosenthal Box
…in North America, especially as smoke pollution caused hazardous air quality conditions across heavily populated areas in the Eastern United States. N95 respirator Video of Richard Corsi demonstrating construction of a Corsi–Rosenthal Box, April 15, 2022…
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A Moldex 2200N95 disposable filtering facepiece respirator, with TC approval number on the strap, TC-84A-0327
Surgical N95 respirators for use in health care are both approved by NIOSH (as a respirator) and cleared by FDA (as a fluid resistant surgical mask), TC-84A-0006
The Hawks Nest Tunnel disaster memorial grave site