Introducing the Shark 113FFJ Hose HEPA Foam and Felt Filters XFF350 XHF350! Keep your home clean with these powerful filters that capture 99.9% of dust and allergens as small as 0.3 microns in size, making sure you breathe easy even when cleaning tough messes. The set includes two filters: a foam filter to capture large particles, and a felt filter to capture fine dust particles. Both are designed for maximum suction power while allowing air to flow freely through the system so you can easily pick up dirt from carpets and hard floors alike. Plus, they're compatible with all Shark Navigator Lift-Away models NV352, NV356E, & UV440