Designed with exclusive Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting cleaner air flow through; Attracts and captures microscopic particles like smoke and smog and large allergens like pollen from the air passing through the filter; Outperforms fiberglass, washable and non-electrostatic 3-month 1-in filters; For maximum performance, change your filter at least every 90 days; For residential use only; Carries a MPR level of 1085; Manufactured by 3M