Deluxe 4-stage reverse osmosis water filterUltimate water filtration - bottle water qualityUse for chlorinated and non-chlorinated waterReduces sediment & rust particles, chlorine taste & odor plus chemicals, cysts, lead & TDSIncludes 5-micron prefilter, membrane, carbon filter, GAC post filter, 3-gal. pressure tank, air gap faucet, installation hardware & wrenchInSinkErator