Replacement filter for Elkay enhanced ezH2O bottle filling stations in high-traffic areas Filter is tested and certified to NSF/ANSI 42, 53 and 401 for the reduction of lead, microplastics, Class 1 particulate, cysts, and chlorine taste and odor Highest-capacity filter minimizes filter changes and maintenance costs for safer hydration without the hassle. Filter should be replaced every 6,000 gallons or 1 year after installation. Equipped with quick-disconnect, 1/4-turn installation, as well as automatic inlet shut-off valve that closes when filter is removed