Improve the quality of your life with the 3m FAP01-RS Small FiltreteTM Ultra Quiet Air Purifier. It has a combination of Filtrete filtering technology and advanced design to capture pollen, mold spores, dust mites, dust, bacteria, and virus carrying particles from the air. These air purifiers operate quietly. It is designed for rooms where daily activity is frequent. This purifier features a filter-change indicator and includes one filter. Once every 3 months, the filter has to be replaced.