Zodiac C140 Electrode Kit Size: 4 3/8 - W193841

W193841 Zodiac ClearWater C140 Electrode Kit**Size:4 3/8\"The C-series chlorinator is available in a number of size units. For most pools you need to produce the equivalent of one cup or approximately 200-250gm of chlorine per day. As most sand filters need 8 hours for adequate filtration, the C200 model is the most common, producing enough chlorine for an average size pool.