Leadservc Kit for Shark Navigator Lift-away Nv350, Nv351, Nv352, Nv355, Nv356, Nv356e, Nv357 Washable Pre-filter (Containing 1 Foam and 1 Felt Filter); Replaces Shark Part # Xff350 Fits Shark Navigator Lift Professional Away Models; NV355, NV356, NV356E, NV357 2 Filters Per Poly package Replacement Shark Euro-Pro Part Number XFF350 Washable and Reusabl