Zodiac AquaPure Ei Electrode (R0511400) dowcorning and this Filbur FC-9850 grid

and this Filbur FC-9850 grid is designed in an 18 inch by 19-1/4 inch format with a center port for matching applications

That can be a practical advantage when the correct overlay is being selected independently or when the replacement plan calls for a more targeted update path

Designed for compatible Hayward wide mouth skimmers

and this Pleatco version uses the PVT25N-P4 reference with FC-0186 and FC-3029 cross references

Zodiac AquaPure Ei Electrode (R0511400) dowcorning and this Filbur FC-9850 gridThe AquaPure Ei Electrode is a targeted replacement for Zodiac AquaPure equipment, making it a smart choice when the original component is worn, cracked, faded, leaking, or missing. It supports AquaPure salt chlorination service by helping maintain proper cell connection, control access, electrical function, or identification of the system. AquaPure systems rely on clean connections, secure housings, and intact service parts to keep salt chlorine