InSinkErator Replacement Filter Cartridge (1-Pack) keeps your water tasting clean by reducing particulates, chlorine taste and odor. These filters are designed for exclusive use with InSinkErator water dispensing systems and feature a sanitary quick-change design to minimize contact with used filter material. The twist-and-lock design allows for quick-and-easy filter swaps. It automatically shuts the water off when the filter cartridge is replaced. The filter is NSF standard 42 certified for quality assurance. The F-1000 filtration system is not compatible for use with InSinkErator SST-FLTR Stainless Steel Tank & Filtration System.