EnviroCare Replacement Shark Navigator Lift- Away Filter Kit. Includes 1 Washable Foam and Felt Pre-Filter & 1 Hepa Filter Designed to fit: Shark Navigator Lift Away Upright Cleaners model NV350, NV351, NV352, NV354, NV355, NV356, NV357, NV358, Deluxe NV360, NV370, NV391, DLX UV440, UV490, UV540 Replaces: Shark Euro-Pro Part Number XFF350 & XHF350 99.97% HEPA Filtration Designed and developed in the USA, manufactured by EnviroCare - an American owned family business and the global leader in premium aftermarket vacuum bags and filters This washable and reusable replacement filter kit fits the following Shark Navigator Lift-Away models: NV350, NV350A, NV350E, NV350Q, NV350T, NV350W, NV350WC, NV350WM, NV351, NV351 26, NV352, NVLFT199 and also the Shark Navigator Lift-Away Professional Vacuum - Model NV356. Replaces Shark Part# XFF350 & XHF350 Includes 1 Foam Filter and 1 Felt Pre-Filter Important: Loss of suction may occur if foam filters are not cleaned every 3 months. Rinse and allow to air dry completely. Directions for Washing the Foam and Felt Filters: 1) With the dust cup removed, pull the 2 filters out from the top of the motor base. 2) Rinse the filters thoroughly in lukewarm water until the water runs clear. 3) Squeeze out excess water and let air-fry for at least 24 hours before inserting back into the vacuum. Note: DO NOT operate the vacuum without ALL the filters in place. DO NOT operate the vacuum with WET filters.