EnviroCare Replacement Vacuum Filters for Shark Navigator Lift-Away NV350, NV351, NV352, NV355, NV356, NV356E, NV357 Uprights Shark Navigator Exhaust Filter NV351 NV352 NV356. Fits NV400 Subs For XHF350 Filter For Lift-Away HEPA NV350 NV357 NV355. 1 Filter in package. Manufacturer Part No.: F651