Envig chloramine fridge filter XC3-015 is the only catalytic carbon fridge filter in the market built for maximum chloramine removal. It removes at least 80% and up to 100% chloramine which is a disinfectant added more and more in city water and affects one out of three people in the U.S. It is built with NSF 42 certified media and parts in the manufacturing process proven with NSF certified products. It offers a precise, leak-proof and tool-free Samsung refrigerator filter replacement and 300 gallon of capacity.