COMPATIBILITY: Replacement for Shark HE601 replacement filter compatible with Shark 6-fan Models (HE601, HE602), replacement filter HE6FKPET, HE6FKBAS, HE6FKPRO 3-STAGE FILTRATION SYSTEM: HE601, Pre-filter and activated carbon filter EASY TO INSTALL: Simply take out the older and dirty He601 filter and replace. HE601 Filters are sealed to protect their lifetime. To ensure your HE601 running at high performance, it is recommended to replace the HE601 Filter every 6 to 12 months 100% SATISFACTION GUARANTEE: JORAIR is dedicated to 100% customer satisfaction. We care deeply about our customers and our top priority is to make you satisfy our product. If this HE601 filter has any problems, please feel free to contact us and we will give you replacement. Product Size: 24*15*1.6 inches. Filter made of FSC-Certified paperFilter made of FSC-Certified paper HE601 Filter for Shark 6 Replacement Filter - Compatible with Shark 6-Fan HE601 HE602,Compare to Part # HE6FKPET, HE6FKBAS, HE6FKPRO, 1 Pack