DESC: With more air circulation plus better dust and pollen capturing capabilities than any HEPA air purifier in its class, the Filtrete from 3M features quiet operation and a stylish design that fits right in with any décor. A user-friendly machine, the Filtrete has filter-life indicator that lights up when it's time to change the filter. An electrostatically charged filter is specially designed for capturing large, airborne allergens like pollen, mold spores and dust mite remains.