HEPA & Pre-Filter for air400 2521
HEPA & Pre-Filter for the Bissell air400 Air Purifier, Series 24791. Follow these instructions for filter replacement: Make sure the Air Purifier is turned OFF and unplugged before replacing the filters. Each filter has blue easy pull tabs. The tabs should face outward. Insert activated carbon filter before inserting HEPA + Pre-Filter. The Pre-Filter attached to the HEPA filter should face outward. NOTE: Filter life varies based on run time and existing air conditions. It is recommended to replace both the HEPA + pre-filter and activated carbon filter once every six months.