The Water Filter Cartridge 10 Micron 3P813 String Wound is a white filter cartridge designed for competitive filter vessels. Made from grooved polypropylene, this one-stage filter cartridge has a flow rate of 5 gallons per minute. It includes a box of 3 cartridges, each featuring a string wound filtration design with a polypropylene filtration method. The filter media is made of cotton, providing efficient and clean filtration for your water filtration system. Ideal for home and garden use, this filter cartridge ensures a reliable and high-quality water filtration solution.