Outperforms All Other 1 Filters Lasts 3 Months 90% effective at capturing large allergens like mold spores and pet dander from the air passing through the filter Captures microscopic allergens like dust, smoke, and smog particles Captures bacteria and particles that can carry viruses Better airflow with 15% lower resistance than Filtrete Micro Allergen Reduction Filter This Filtrete Filter meets Health House indoor air quality guidelines. - American Lung Association and Health House EM How Does The Ultra Allergen Reduction Filter Help Clean The Air InMy Home? When your heat or central air conditioning is on, or if you run your fan continuously, air circulates in your home and passes through your air filter. Filtrete filters from 3M contain permanently electrostatically charged fibers that work like tiny magnets to attract and capture the particles in your air. Each of t

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