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Philly DSA is helping parents build DIY classroom air filters amid school asbestos closures

Safe Air for Philly Schools

Called Corsi-Rosenthal boxes, the makeshift purifiers can also help with mold and other toxins.

Learn more:
https://billypenn.com/2023/04/25/philadelphia-school-asbestos-air-filters-corsi-rosenthal/
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