This is a bulk, money saving package of 8 total Shark XF22 Navigator, Navigator Swivel Replacement Circular Shaped Foam, and Felt Filter Kit, or 2 Sets of 4 Filters. Each kit includes 4 filters, 2 Washable Foam Circular Filters, 1 Washable Felt Circular Exhaust Filter, and 1 Woven Rectangular Shaped Filter. The vacuum uses all 4 filters at once, and it's recommended that the circular foam and felt filters be removed from the dust bin container and washed every 30 days, and replaced after 3-4 washes, and the woven exhaust filter should be replaced every 6 months. Fits Shark Navigator Models: NV22, NV22C, NV22L, NV22LC, NV22P, NV22T, NV22Q, NV22W, Shark Navigator Deluxe Model: UV400, UV410, the new Shark Navigator Swivel Models; NV26, NV36, and Shark Navigator Lite model NV100. Save BIG when purchasing this convenient bulk package of 2 Filter Kits, 8 Total Filters, conveniently put together to save you time, and money. All filters are genuine OEM Shark Filters, Part XF22, or XF-22. It's very important that you do not use any generic, replacement Non-Shark Euro-Pro filters to avoid possibly serious damage to your vacuum cleaner, as well as voiding the generous 5 year warranty which Shark gives you. Use of a generic non-shark filter can cause serious damage to your vacuum cleaner's motor, as the filters aren't designed specifically for the vacuum like Shark's filters are, as well as using generic Shark filters will also void the entire 5 year warranty given by Euro-Pro Shark on your Shark Navigator, Shark Navigator Lite, or your Shark Navigator Swivel Bagless Uprights. 2 Sets of Filters, 8 Filters Total, OEM Shark Part XF22.