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How to build an air purifier in 6 simple steps

Source: Adafruit Blog ·

John Alexander built a DIY air purifier for Popular Science and wrote up how it went. The design is a Corsi-Rosenthal box, or CR box: four square furnace filters taped into a cube, a cardboard bottom cut from the fan’s shipping box, and a box fan on top. The fan pulls air in through the […]

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