3M Purification, SGB145-CLS, (5636601) 3M™ Water Filtration Products ScaleGARD™ Blend Series Hardness & Chloramines Reduction System, 0.5 gpm flow rate, 530 gallons @11 gpg, hard scale, chloramines, chlorine taste & odor reduction, (for coffee, espresso, vending & steamers)