20x20x1 PURPLE FILTRETE AIR FILTER

Filtrete 20"x20"x1" Purple Ultra Allergen Filtrete Filter. It is 90% effective at capturing large allergens like mold spores & pet dander. It is electrostatically charged to capture microscopic allergens like dust, smoke & smog. It captures bacteria & particles that can carry viruses. It meets the guidelines of the American Lung Association Health House Program. It has a MPR rating of 1500 and lasts up to 3 months.