The ES3 copper and silver electrode kit is for the model pictured below & purchased before Dec 2014. The lifetime of these electrodes varies but the average expectancy is between 18 months to 4 years depending on bather load and pool volume.
The electrodes are 65mm long and easy to remove and replace; supplied in pairs, they do not come with the black retaining cap, shown for illustration purposes only.
APVMA approval number 58847/01/1005
ES3 Replacement Electrode Kit (Pre 11/2014)