1.Reliable Packaging – This complete vacuum filter system is made up of a combination of parts. Contains 2 packs HEPA filters and 4 packs foam & felt filters Kit. These replacement parts works as great as the original ones, perfect fit and easy install. 2.Excellent Performance – High quality foam filers with 60 PPI density and ultra-thick felt filters with a textured surface, uses the latest technology to absorb small particles such as food, hair, dirt, dust and pet dander. Premium vacuum HEPA filters with H12 efficiency to trap pollen and 99.97% of particles as small as 0.3 microns in size. 3.Perfect Fit – Compatible with Shark Navigator Zero-M Self-Cleaning Brushroll Pet Pro Upright Vacuum ZU60, ZU62, ZU62C, Shark Navigator Pet Plus Upright Vacuum NV251, Shark Rotator Pet Plus Upright Vacuum NV255. Compare to Part # 1238FT60 & 1239FT60. 4.Regular Maintenance –Clean and replace filters regularly for optimal performance depending on your frequency of use. Rinse filters with water only and Let all filters air-dry completely for at least 24 hours before reinstalling. Recommend replace HEPA filters every 6 months and replace foam & felt filters every 3 months. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.