EV9270-91 Everpure SPA-400 Quick Change Replacement Filter Cartridge Replace the C-SPA-400 cartridge (EV9270-91) yearly to reduce the following contaminants:LeadCysts such as Giardia lamblia, Entamoeba histolytica and Cryptosporidium parvumChlorine taste and odorDirt and cloudinessMold and algaeOxidized ironOxidized manganeseOxidized sulfidesParticles 1/2 micron and larger in sizeCapacity 3,000 gal. (11,356 L)Plumbs directly to existing prep sink or bar sink faucet (standard kitchen and bathroom faucets)