When it comes to your home, you expect things to be neat and clean. You take steps to keep your home clean and in order. Unlike ordinary pleated filters, Filtrete ™ Clean Living filters are electrostatically charged to help capture more particles from your air, including: lint, household dust and dust mite debris. For optimum performance, change your filter every 90 days or sooner. * Attracts and captures particles like household dust and lint from the air passing through the filterElectrostatically charged to attract and capture microscopic airborne particlesOutperforms fiberglass, washable and non-electrostatic 3-month pleated 1 inch filtersCarries a 300 Microparticle Performance Rating (MPR)Lasts up to 3 months