For nearly 25 years, Filtrete™ Filters have delivered cleaner air to millions of homes, becoming a leader in residential air filtration. As a result, Filtrete is the most trusted brand* of indoor air cleaning filters on the market today. Developed by 3M engineers to help capture airborne allergens, the Filtrete Filter media is electrostatically charged to act like tiny magnets that attract and capture microscopic particles from the air as it passes through the filter. Our dedicated technical team continues to develop innovative solutions to help improve indoor air quality.