Vacuum Filter Replacement Kit for Shark DuoClean Speed Lift-away NV770, NV771, U | eBay
XFF450 Rotator Professional NV450 OEM Foam and Felt Filter Kit, Includes 1 Washable Foam, 1 Felt Filter, Part XFF450, Shark XFF450 Foam and Felt Filter Kit for Shark.., By Shark,USA - Walmart.com
Foam & Felt Filter Kit (XFF350) | Official Shark® Replacement Parts & Accessories