What is a carbon block water filter cartridge? It’s usually placed as the third stage of the water filtration system to remove Residual Chlorine, Chemicals, VOCs, Bad Taste from well water / hard water / city water / municipal water / drinking water, etc. Carbon Block Filter is composed of food-grade coconut shell carbon block, dense PP food-grade non-woven fabric, and PE outer net. Food-grade coconut shell activated carbon with high iodine adsorption capacity. COMPATIBLE WITH NSF/ANSI 42 CERTIFICATION and BPA FREE. 100% safety and healthy. The PP non-woven fabric can prevent carbon powder leakage during filtration to avoid re-comtamination of filtered water and prolong the life-span. The food-grade silicone o-rings prevent leaks with good sealing performance. CTO water filter not only effectively remove parts of sediments, but also effictively adsorb 90-99% free chlorine, taste & odors, hydrogen sulfide and other unpleasant smells, heavy metals (such as lead, manganese, iron), residual pesticides / pesticides and other organic matters, ect. To improve drinking water quality, making it much purer and fresher and providing your family with a much healthier life style. Sintered Carbon Block Water Filter with 5 micron service time can be last as long as 6 months or filtration capacity up to 10,000-15,000 gallons depending on your water quality, you’d better replace this water filter every 3 or 6 months for better whole house water quality. Please flush the carbon water cartridge and drain 3-5 gallons water before putting into operation. The carbon sediment filters widely apply for whole house filtration systems, pre-filtration systems, RO water systems, Point of Use. 10″2.5″ fits for most of 10 standard filter housings, such as countertop filter housings, under-sink filtration systems, inline filter housings. Activated carbon block water filters are most effective at removing chlorine, particles such as sediment, volatile organic compounds, taste and odor from water. Provide a healthy living environment for you and your family. Compatible with reverse osmosis filter systems of brands. GE, Culligan, Dupont, Kenmore, Omnifilter, Whirlpool, etc. The Filter is compatible with GE FXUTC, GN1S15, GN1S15CBL, GN1S20C, GX1S01C, GX1S04C, GX1S15, GX1S15C, PS220413. Dimensions: 10″x2.5″. Inner Diameter: 1.1 (28mm). Filter Medium: Extruded Activated Carbon. Applicable pH value: 1-14. Max Temperature: 104°F (40°C). Material: Premium Quality Coconut Shell Carbon. Lifetime: Replace the cartridge. Or earlier-Depending on your water quality. Cartridges may contain a very small amount of carbon fines (very fine black powder). After installation, follow the instructions for flushing the cartridge to remove the fines before using the water. You should flush the tap at least 20 seconds prior to using water for drinking or cooking purposes. This is particularly important if the tap has not been used daily. This filter needs to be replaced regularly. Otherwise, it will breed bacteria easily and cause secondary pollution of water. Do not use with water that is micro-biologically unsafe or of unknown quality without adequate disinfection before or after the system. 1 Pack: 1x CTO Carbon Block Filter 2 Pack: 2x CTO Carbon Block Filters 4 Pack: 4x CTO Carbon Block Filters 6 Pack: 6x CTO Carbon Block Filters 8 Pack: 8x CTO Carbon Block Filters 10 Pack: 10x CTO Carbon Block Filters 12 Pack: 12x CTO Carbon Block Filters 16 Pack: 16x CTO Carbon Block Filters 20 Pack: 20x CTO Carbon Block Filters 25 Pack: 25x CTO Carbon Block Filters. Not all of the items are included in the package, please choose the “Quantity” You Need in the selection.