This Pentek GAC-5 carbon filter cartridge reduces chlorine taste and odor in residential and commercial drinking water. It will reduce free available chlorine (FAC) at 2 parts per million (ppm) by at least 75% in up to 25,000 gallons at a flow rate of 4 gallons per minute (gpm). The cartridge is made granular activated carbon (GAC) filter media encased in polystyrene with a spun polypropylene post filter. The nitrile butadiene rubber (Buna-N) and Santoprene (TPE, thermoplastic elastomer) gaskets seal the cartridge against the housing (sold separately). The cartridge has an initial pressure drop of 3.0 pounds per square inch (psi) at a flow rate of 0.5 gallons per minute (gpm), and operates over a temperature range of 40 to 125 degrees F (4.4 to 51.7 degrees C). This carbon filter cartridge is for treatment of residential and commercial drinking water. Chlorine reduction capacity is the minimum total amount of water for which the free available chlorine (FAC) at a concentration of 2 ppm is reduced by at least 75%. Water filters are used in a wide range of applications, including drinking water purification, swimming pools, industrial processes, and irrigation, among others. Pentair manufactures industrial, commercial, and residential water filtration components and systems. The company, founded in 1966 and headquartered in Minneapolis, MN, meets International Organization for Standardization (ISO) standards 9001 and 14001 for quality assurance.