The 47-55707G2 cartridge is employed second in series in the FM-2 Lead Plus Cuno Water Factory Drinking Water System. This carbon block cartridge is engineered to remove Volatile Organic Compounds (V.O.C.) from the water. It also has impressive dirt/sediment removal attributes down to 1 micron.
This cartridge also used 2nd in series in these other Water Factory Systems: FM3 DWS 350 & the CM-2.