Powerful 3-Stage Filtration: The iSpring F3WGB31BCPB whole house water filter replacement pack includes a 10” x 4.5” sediment filter (FP15B), a CTO carbon block (FC15B), and a lead removal filter (FC15B-PB) with filtration media independently tested by SGS to remove up to 99% of lead. Together, they effectively reduce sediments, chlorine, unpleasant tastes and odors—providing clean, odor-free water for your entire home. Built to Last: Designed for durability, this filter set delivers reliable performance for up to 50,000 gallons or 12 months, depending on water usage and quality. It is a long-lasting solution for those seeking a dependable whole house water filter replacement. Sealed for Quality: Every cartridge is individually wrapped to ensure freshness and peak performance. Be sure to unwrap before use. Lifetime U.S. Support – Our friendly customer service team is always ready to guide you through filter replacement and whole-house system maintenance. Healthy Minerals Retained: This filter retains healthy minerals and does not reduce TDS. For total dissolved solids removal, explore our iSpring Reverse Osmosis systems.