The Jandy R0511400 Replacement Electrode makes retrofitting your existing AquaPure Ei Salt Chlorine Generator a snap. For pools up to 35,000 gallons, the replacement electrode is built for plug-in installation at 120V and works by mounting onto 1-1/2" standard PVC piping, sitting above two drilled feeder holes. The cell must be installed horizontally after the heater, pump, and filter for ideal operation and should be installed no more than 15' from the AquaPure Ei power pack.