LifeSupplyUSA Foam and Felt Filters fit Shark XFF350 Navigator Lift-Away NV350, NV351, NV352 1 Foam and 1 Felt Filter - Replaces Part # XFF350 Fits Shark Navigator Lift Professional Away Models; NV355, NV356, NV356E, NV357 Helps effectively filter airborne irritants such as smoke, pollen, dust, mold spores, pet dander and fabric fibers. By LifeSupplyUSA Brand New Individually Sealed