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SCHOOLS. It’s not too late, it’s not too hard, and it’s not too expensive to improve air quality in your classroom —> portable air cleaner with HEPA filter —> size it right for your room —> place close to center as possible —> turn it on EASY details in thread
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Machines not built for the level of use it would take in a school. Not rated for commercial (school setting) Same reason self contained coffee units are not allowed in some staff rooms. Home use is not same compared to number of time be used over a day. Terribly simple analogy.
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