PUREFLOW 2021 Audi SQ5 Cabin Air Filter with HEPA and Antibacterial Technology, PC99334HX Model_Nitro and bacteria on the filter

and bacteria on the filter

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and AC units

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and other fine airborne particles for higher-efficiency home air filtration

PUREFLOW 2021 Audi SQ5 Cabin Air Filter with HEPA and Antibacterial Technology, PC99334HX Model_Nitro and bacteria on the filter1st Stage: For drivers and passengers who suffer from severe allergies, PUREFLOW HEPA (High Efficiency Particulate Air) offers 99. 97% efficiency, capturing microscopic pollutants including pollen and other allergens (may result in a minor restriction to airflow). 2nd & 3rd Stage: Activated charcoal adsorbs harmful gases like carbon monoxide and sulfur dioxide. This layer is combined with baking soda to absorb bad odors. 4th Stage: Advanced