Whole House Water Filter Cartridge, 4.5 x 20 Carbon Block

Whole house water filter replacement cartridge delivers cleaner-tasting water by reducing chlorine, bad taste, and odor at the point your home needs it most. This 4.5" x 20" CTO carbon block cartridge uses coconut shell activated carbon to adsorb dissolved contaminants and trap fine particles for fresher water throughout the house. Designed as a universal fit for many 3-stage whole home filtration systems, it installs quickly and supports high-flow performance for everyday use.

Keep your whole-home water filtration system performing at its peak with a CTO carbon block replacement built for everyday reliability. The high-density carbon structure boosts adsorption, helping reduce chlorine-related smell and taste while capturing small debris that can affect water quality. With a typical service life of 9–12 months (based on incoming water conditions), this cartridge helps cut down on frequent changeouts and ongoing maintenance. Refresh your system and grab yours today.