Two CF filters (pre-sediment and carbon block filter) and one CB filter (activated carbon block filter). ???????????????????? ??????????: WD-G3-W, WD-G3P600, WD-G3P800-W ???????????????? ????????????????????: The 3-in-1 front filtration stages effectively reduce sand, rust, particulates, suspended substances, and other impurities. Delivers clean and pure water to you. The precision filtration system effectively improves the taste and smell of water. It helps deliver clean and pure water. ?????????????? ????????????????: Applies the superior natural coconut shell-activated carbon block with a smaller pore size, which largely absorbs residual chlorine odors and organic materials, improving water taste. The activated carbon block is made from natural coconut shells .Please confirm whether you are allergic to it. ?????????????? ????????????????: This CB filter boasts a superior coconut shell-activated carbon block with a smaller pore size, which largely adsorbs residual chlorine odor and organics, improving the waters taste. The activated carbon block is made from natural coconut shells .Please confirm whether you are allergic to it . ???????????? ?????????????? ????????: It delivers clean and pure filtered water for a full year. It also provides long-term benefits for your familys health. ???????? ????????????????????????: It only takes a twist to replace the filter in three seconds. No tools required.