InSinkErator F-2000 Replacement Filter Plus, 1-Pack One replacement water filter for use with InSinkErator water filtration system Replacement water filter reduces particulates, chlorine taste and odor, plus cysts, lead, mercury, asbestos, benzene, atrazine, 2, 4-D, Lindane, Carbofuran and other impurities down to 1/2 micron Sanitary, quick-change filter cartridge and twist-and-lock design for easy filter changes Recommended to replace water filter every 6 months for optimal performance Compatible with InSinkErator F-1000S and F-2000S filtration system only; not for use with InSinkErator SST-FLTR stainless steel tank and filtration system