EcoMaid Accessories For Shark Rotator Pro Lift-Away NV500 NV501 NV505 NV552 HEPA Filter & Foam Filter Kit, Part # XFH500 & XFF500 6 Piece Filter Kit (2 Foam + 2 Felt + 2 H.E.P.A )Designed to fit Shark Rotator Pro Lift - Away NV500 Compare to Part # XHF500 & XFF500 Absolutely Essential for Allergy Sufferers