The F2000 replacement filter is only compatible with the latest InSinkErator HWT-F1000S hot water tank, or F1000S & F2000S filtration systems. The Replacement Filter Cartridge Plus (1-Pack) keeps your water tasting clean by reducing particulates, chlorine taste and odor, lead, mercury, cysts, asbestos, and other impurities. 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.