Fit Model: Compatible with Shark IZ662H IZ682H IZ640H IZ631H WZ531H Vertex Pro Lightweight Stick Vacuum Not-Fit Model: Not-Fit-For Shark 163 Series, 162 Series, Not-Fit-For IZ163H, IZ362H, IZ363HT, IZ440H, IZ462H, IZ482H, IZ483H, IZ361H, IZ441HBRN Vacuum Cleaner. Not-Fit-For Shark 1X140 Series like IX140, IX141, IX142, IZ140, IZ140C, IZ141C, IZ142, UZ145 Vacuum Cleaner, please check the model number before you order. Contains: 2 Pack HEPA Filters and 4 Pack Pre-Motor Foam & Felt Filter Kit. Part XHFIZ500 & XFFKIZ600. Filter Advantage: Premium vacuum filters with H13 efficiency to trap 99.97% of particles as small as 0.3 microns in size. Washable & Reusable: Just rinse the filters in water and let it dry by natural. Easy to install and replace. Recommend replace the filter every 2-4 weeks depend using situation. Fit Model: Compatible with Shark IZ662H IZ631H WZ531H Vertex Pro Lightweight Stick Vacuum ATTENTION! Not Fit For Shark 163 Series, 162 Series Vacuum, Please check the model number before you order. Not Fit For Shark 1X140 Series like IX140, IX141, IX142, IZ140, IZ140C, IZ141C, IZ142, UZ145 Vacuum Cleaner.