Advanced 2-Stage Water Filtration for Purity: Our 20" x 4.5" filter cartridges feature a dual-layer system with a 5-micron sediment filter and a CTO carbon block filter. This combination effectively eliminates dirt, chlorine, and contaminants, ensuring you enjoy clean, refreshing water every time. Dual Gradient Sediment Filtration: Our whole house sediment filter cartridge, featuring Dual Gradient Density technology, captures fine particles like sand, silt, dirt, and rust. This improves the efficiency of your well water filtration system while protecting your plumbing and appliances from potential damage. CTO Carbon Technology for Enhanced Water Quality: Our CTO filter utilizing activated carbon, captures chlorine, total organic carbon (TOC), pharmaceuticals, turbidity, and chemicals that cause bad tastes and odors. This stage enhances the taste and drinkability of your water while removing harmful contaminants. High Flow and Efficiency: With a high flow rate and lasting up to 6 months, this 5-micron sediment and carbon filter ensures pure, filtered water, effectively removing sediment and contaminants for long-lasting performance. Quick Installation and Low Maintenance: This whole house filter replacement set is compatible with standard 20" filter housing models, allowing for easy installation. Simply follow the clear instructions to replace your filters and keep maintenance simple. This 2-stage water filter system helps protect household. Whole House Filtration with Extended Shelf Life: Max water whole home water filters are individually wrapped & sealed and extend shelf life. Please unwrap before use. These can be used for residential and commercial applications. It is Installed at the main water supply and produce pure water for your entire home. BPA-Free Construction: Our water filter systems are made with BPA-free components, ensuring the safety of your drinking water by avoiding harmful chemicals and plastics. Ideal Fit: Max Water carbon block filter is fully compatible with a wide range of models including Geekpure BC20-BB-5, Pentek 255678-43, iSpring FC25BX4, KX Matrikx 32-450-20-GREEN, Express Water FLTWH2045C, EP20-BB, Water Filters Depot (WFD) WF-CB205-BB, Wholesale Market LLC BBCTO-20B4, CTO20B4, and others. Efficient Compatibility: Max water 20" 5 micron sediment filter is designed for use with models including iSpring FP25B, Pentek 155358-43, 3M Aqua-Pure AP810-2, BLUONICS PP-20B4, ClearChoice CCS034, Liquatec SDF-45-2005, Filter Specialist CMMF0520-45W1, Watts FPMB-BB5-20, DGD-5005-20, and more. Why Max Water: With over 15 years in the water filtration industry, Max Water has delivered effective solutions and exceptional customer service to millions of families. Choose Max Water for reliable, high-quality filtration solutions. 20" BB Whole House Whole House Water Filter Set - 20" x 4.5" Polypropylene Sediment, CTO Carbon Block Water Filter pack, Total of 4 Filters compatible with 20" BB Whole House Systems