This product is a suitable replacement for Elkay 51600C, Wide Compatibility: Designed to Work Seamlessly with Models Including: EWF6000, ERF750, 55898C, LZS8WSLK, LZS8WSSP, LZS9WSSP, LZSTL8WSLP, and LZSTL8WSSP. Designed to reduce lead, particles and chlorine. Also reduces odors and discoloration from incoming water. Filter should be replaced every 6,000 gallons (expires 1 year after installation). Built with premium, clog-resistant materials to ensure reliable water flow and reduce maintenance. Equipped with quick-disconnect, 1/4-turn installation, as well as automatic inlet shut-off valve that closes when filter is removed. This 51600C filter reduce of lead, cysts, Class I particulates, and chlorine taste and odor.