Keep your upright vacuum running efficiently with this foam and felt filter replacement kit designed for routine maintenance and suction recovery. Compatible with Shark Navigator NV22 Series NV22C, NV22L, NV22LWM, NV22LC, NV22P, NV22S, NV22T, NV22Q, NV22W / Shark Navigator Deluxe UV400, UV400_26, Swivel Deluxe UV410, UV410_26 / Shark Navigator NV26, NV26Z, NV27, NV27GR, NV27PR, NV36, NV36A, NV36_26, NV36A_26, NV42, NV42_26; replacement for Shark XF22. The 4-piece set includes 2 foam circular filters, 1 felt circular filter, and 1 felt exhaust filter, and the vacuum uses all 4 filters at once to help capture dust and fine debris while supporting airflow. The circular foam and felt filters are washable and reusable: wash about every 30 days, replace after 3-4 washes, and replace the woven exhaust filter about every 6 months. Allow filters to dry completely before reinstalling and do not operate the vacuum with wet filters. Before purchase, confirm your original filter matches this style; if your original filter has a hole inside, this kit is not compatible. Disclaimer: This is not an Original Equipment Manufacturer (OEM) product, HQRP branded product is a replacement. All brand names and logos are registered trademarks of their respective owners. Any use of the brand names or model designations for this product are made solely for purposes of demonstrating compatibility.