3M Water Filtration Products HF20-MS 5615109 Replacement Filter Cartridge Provides consistent quality brewed coffee and tea by reducing sediment and chlorine taste and odor Scale inhibition helps protect spray heads from clogging by reducing sediment particles Reduces the ability of calcium and magnesium to form as hard scale on the heating coils causing downtime and unscheduled service maintenance Sanitary Quick Change (SQC) encapsulated cartridge design allows for fast and easy cartridge change-outs with a 1/4 turn