The Brondell UF-35 3-Pack Replacement Filters are specifically designed for the Coral UC300 Carbon Block Sediment system, offering reliable filtration of sediment, carbon, and charcoal contaminants. Made of white plastic with a capacity of 600 gallons, these cartridges are suitable for under-sink use and can remove lead and chloramines. With a cartridge life of 6 months and a manufacturer warranty of 1 year, the Brondell UF-35 filters are a convenient and effective solution for maintaining clean and safe water in your home.