Three layered sediment filter technology ( PP Sediment ) : Max Water Melt Blown Cartridges is manufactured from 100% Polypropylene construction offering excellent filtration and good thermal stability. Designed as three-layers structure cartridge for high contaminant holding capacity and dual gradient density filtration. 100% coconut shell carbon design ( GAC ) : The GAC Filter Chlorine, Turbidity, Bad Taste & Odor, Sediment, Dirt, and THMS from water. It is made of thick wall coconut base carbon filter media - 100% coconut shell carbon Designed For maximum contact between the water and carbon. Unique & efficient carbon blocks ( CTO ) : Our carbon block filters ( CTO ) are uniquely designed in achieving the maximum possible chlorine & chemicals from drinking water. The extremely large carbon block surface maximizes contact time for water and multiplies lifetime of filters and membranes. Thread type post-carbon water filter: As the final stage of filtration in your system, this activated carbon water filter reduces any remaining impurities while enhancing the flavor of drinking water. Fully ¼” thread connect compatible inline post carbon filter. Compatibility : Compatible with systems from - ispring , Hague , Kemflo , Watts , Express Water , Culligan , 3M Aqua-Pure , GE , APEC , Pentek , Whirlpool , Global Water , DuPont , Costway , Olympia , Glacier Bay , Geekpure , Aquasana , US Aqua , The Perfect Water. All mentions of brand names or model descriptions are made strictly to illustrate compatibility. BPA free components: Our water filter systems doesn't contain Bisphenol A or other toxic plastic materials. Quality Tested: We consistently provide products and services that meet customer quality requirements. Why Max Water - We have 15+ years of experience in water filtration industry providing solution with a smile to millions of families. Make Max Water your solution to all your filtration needs. Max Water 5 - stage complete filter cartridge set is made with high quality components to prolong the lifespan of your RO ( Reverse Osmosis) system. Our premium quality filters last over 6 months * ( also depends on local water quality ) for high performance contaminant removal. Compatible with all other standard size wall mount and / or under sink RO systems.