The Flint & Walling Cartridge/Carbon Block is a 10-inch filter designed to improve water quality by reducing contaminants. Sold in cases of 12, these carbon block cartridges effectively remove chlorine, sediment, and other impurities, ensuring clean and safe drinking water. Their compact design allows for easy installation in standard filter housings. Ideal for residential and commercial water filtration systems, these cartridges meet industry standards for performance and safety, providing reliable filtration for various applications.