【Compatible with Shark Air Purifier 4】For Shark 4 Fan filter replacement HE401 HE402 true HEPA filter replacement compatible with Shark air purifier 4 models (HE400 HE401C HE402 HE405 UA415) Advanced Odor Lock 4-Fan Models. Replaces Part No. HE4FKPET HE4FKPRO HE4FKBAS. 100356-chn-1 filters. Please check your shark air purifier max model number before purchasing, thank you. 【True HEPA Filtration System】This HE400 filter for Shark Air Purifier 4 fan is designed in H13 True HEPA, could provide a high efficiency on standards of 99.97% filtration, down to 0.3 microns, protect against household odors from pets, cooking, cleaning products, smoking,and more to improve air quality. 【Value Pack】Package includes 2 pack HE402 filter replacement for Shark air purifier 4 (HE401&HE402). It can be installed easily without any tools. Regular replacement of the Shark filter helps improve machine performance and filter life. 【High Efficiency】This HE401 filter premium for Shark's NANOSEAL 4 Fan Filter Replacement, provides the high efficiency on standards of 99.97% filtration, down to 0.3 microns, protects against household odors from cooking, cleaning products, smoking, and more. 【Warm Maintenance Tips】 For optimum performance of your air purifier,it is recommended to replace the HE405 filter every 6-12 months depending on the air quality in your area and the usage of the air purifier. (Please press and hold the switch to restart air purifier after replacing the filter.) Our he400 filter has the same quality and function as the original, we have tested it before for sale, please don’t worry to buy. 【Please Note】This is not a Shark OEM product and is not covered under any Shark manufacturer's warranty. The Shark brand names and logos are the registered trademarks of their respective owners. Any use of the brand name or model designation for this product is made solely for purposes of demonstrating compatibility. HE401 Filter Replacement for Shark Air Purifier 4-Fan Models, H13 True HEPA Filter Replacement Compatible With Shark HE401 HE402 HE405 HE400, HE4FKPET HE4FKPRO HE4FKBAS 100356-chn-1 Filter, 2 Pack