【Compatibility】51300C with Chip, Compatible with Elkay 51300C Universal EWF3000 System. 【Premium Materials】Made from premium BPA-free and lead-free materials, and the activated carbon is made from natural coconut shell, ensuring safe drinking water. 【High Efficiency Filtration/Quality】 Natural coconut shell activated carbon blocks are used for advanced filtration, reducing chlorine, lead, cysts, and odor absorption.The shell is made of high-quality PP material and has high durability. 【Long Lifespan】 Compatible with Elkay Water Filter Replacement has been extended to 3000 gallons (equivalent to 67500 bottles). Compatible with filter should be done every 3000 gallons after installation or every year after installation. 【Easy to Imstall】Installation is quick and tool-free — just twist the 51300C filter into place for an effortless replacement.