This whole house water filter replacement cartridge is designed to reduce iron, manganese, chlorine, odors, and other common water impurities for improved water quality, color, and taste. Its standard 4.5" x 20" size fits most compatible filter housings and whole house filtration systems for easy replacement. The cartridge uses iron and manganese removal resin and supports high-flow filtration for household water applications. It can filter up to 100,000 gallons and has an estimated lifespan of up to 12 months depending on water quality.