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⟩ What is high-Efficiency Particulate Air Filter (HEPA)?

High-Efficiency Particulate Air Filter (HEPA) a filter that is at least 99.97% efficient in removing monodisperse particles of 0.3 micrometers in diameter. The equivalent NIOSH 42 CFR 84 particulate filters are the N100, R100, and P100 filters.

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