IC40 Replacement Salt Chlorine Cell for Pools, Compatible with Pentair IntelliChlor Systems, Replaces EC-520555/520555, Self-Cleaning, 2" Union, Up to 40,000 Gallon In-Ground Pools

["Replacement for IC40 / EC-520555 – Perfect for pools up to 40,000 gallons, fully compatible with Pentair IntelliChlor systems. Reliable performance.","Self-Cleaning Reverse Polarity – Reduces scale and calcium buildup automatically, helping maintain stable chlorine output and extending cell lifespan.","Easy Installation & Maintenance – Includes all necessary accessories: long control cable, two O-rings, and cleaning tool. Quick replacement without professional assistance.","Optimized Water Balance Support – Designed for pools with ideal salt level of 3600 PPM, compatible with recommended chemical ranges for phosphates, alkalinity, calcium hardness, and pH for clear, swimmer-safe water.","2-Year Warranty & Support – Includes 2 years quality guarantee. Purchase with confidence and enjoy reliable customer support for any issues."]