CircuPool&reg; Universal40 Saltwater Chlorinator - Complete System with 40k-Gallon Max Cell - Compatible with Hayward&reg; Plumbing Guaranteed compatibility, replaces old system in minutes No warranty penalty for self install - Four years Virtually the cost of a OEM Replacement Cell Easy compatible replacement for ANY SIZE Hayward / Goldline/ Aqua Rite View Through Window - allows visual of vitals without opening door