Having clean filters is critical to maintain cleaning performance. Over time, filters can become dirty and eventually clog reducing vacuum performance. It is recommended to check your filters monthly and replace every 3 to 6 months depending on frequency of use. Febreze* Spring & Renewal Scent SHARK XFF36 Vacuum Filter, 1 CT, 2696 Fits SHARK** Vacuum Models: Navigator* Swivel NV42, NV46, Navigator* UV410 * Odor eliminators neutralize household malodors, leaving behind the fresh and clean feeling of Febreze* while you vacuum. * Washable filter reduces household allergens such as tree, grass, and ragweed pollens. * Package includes 1 complete filter set: (1) pre-motor foam, (1) pre-motor felt, (1) post-motor *Certain trademarks used under license from The Proctor & Gamble Company or its affiliates. **Trademark of the vacuum cleaner manufacturer.