Best Vacuum Filter Compatible Shark Navigator Lift-Away NV350 Foam & Felt Filter Set, Fits NV350, NV351, NV352, NV355, NV356, NV357, NV360, NV370, NV391, NVLFT199, UV440, UV540 Vacuum Shark XFF350 Designed to fit Shark NV350 Foam & Felt Filter Set Filter Fits Shark Navigator Lift-Away models: NV350, NV350A, NV350E, NV350Q, NV350T, NV350W, NV350WC, NV350WM, NV351, NV352, NV355, NV356, NV357, NV360, NV370, NV391, NVLFT199, UV440, UV540 Compare to Part # XFF350 Washable and Reusable Designed & Engineered by Best Vacuum Filter