BISSELL Post-Motor Filter Pack  (2 Pack), 3099 Note: Your product may require multiple filters Both filters are washable-Clean by hand washing in warm water. A mild detergent may be used if desired. Allow the filter to air dry completely before replacing. It's a good idea to buy an extra filter to always have a dry one ready to use Works with Model No's:20Q9 series, 3574 series, 3576 series, 73G8 series, 82H1 Work with Cleanview Helix series