The Everpure CTOS-20 is a high-performance water filtration cartridge designed to enhance the quality of your water. Measuring 20 inches, this cartridge features IsoNet® technology, providing a capacity of up to 30,000 gallons and a flow rate of 3 gallons per minute. With a 0.5-micron particulate filtration, it effectively reduces chlorine, taste, and odor, ensuring clean and refreshing water. Additionally, it inhibits scale buildup, promoting the longevity of your appliances. Each case contains six cartridges, and they must be purchased in case pack quantities.