Corsi–Rosenthal Box - Wikipedia
Created 6/7/2026 at 3:01:56 AM • Edited 6/7/2026 at 3:02:13 AM
The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four[1] or five[2][3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters. The seams of the cube are sealed with duct tape.
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