2 Pack Shark Navigator Lift-away Filter Bundle NV350 NV351, NV352, NV355, NV356, NV360, NV370 NV357, NV391, NVLFT199, UV440, UV490CCO, UV540 Foam and Felt + 1 Hepa Filter; Shark Part # XFF350 XHF350 KIT CONSISTS OF 2 Washable FOAM + FELT FILTER SETS + 1 H.E.P.A FILTER REPLACES SHARK OEM # XFF350 & XHF350 FITS SHARK NAVIGATOR LIFT-AWAY NV350, NV350A, NV350E, NV350Q, NV350T, NV350W, NV350WC, NV350WM, NV351, NV351 26, NV352, NV355, NV356, NV356E, NV357, NV360, NV370, NVLFT199, UV440, UV490CCO, UV540 &#9786; ABSOLUTELY ESSENTIAL FOR ALLERGY SUFFERERS &#9786; - always use clean filters to ensure optimal performance from your Shark Navigator Lift-Away Designed and Engineered by Casa Vacuums in the U.S.A !!