Why choose us? Membrane Solutions is well-known membrane separation company with great experience and specialists in water purification. Our filtered products are widely used in residential, commercial and industrial water treatment. Membrane Solutions is committed to: Offering a special choice and add-value for our clients. Providing the most reliable filter products and highest service quality in the water treatment industry. Satisfying our customers with superior quality filtration products which provides you a much healthier lifestyle. 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 / tap water / municipal water / drinking water, etc. Standard Dimension: 5 Micron 20 inches x 4.5 inches universal filter cartridge fits for most 20 inch big blue whole house water filter systems of 3M, GE, Culligan, Dupont, Pentek, Whirlpool, Filtrete, etc. Improve Water Quality: Activated carbon water filters are most effective at removing chlorine, particles such as sediment, volatile organic compounds, taste, and odor from water. No longer be bothered by smelly, bad tasting water. Provide a healthy living environment for you and your family. Ensure Safe Water Supply: Our carbon filter cartridge is made of high-quality coconut shell carbon. The outer layer has food-grade plastic net wrapping PP non-woven fabrics, in order to ensure that the filter itself does not have carbon powder migration. Both ends of the filter equipped with a rubber gasket which makes the filter have good sealing. It meets the NSF 42 certification. Low Pressure Drop: This filter is usually installed in the whole house filtration system after the pre-filter or before water softener system, keep the water clean and tasty. Best choice to treat well water, municipal water, tap water, drinking water, etc. Protect Household Appliance: This water filter replacement cartridge is usually installed in the whole house filtration system after the pre-filter or before the water softener system, keep the water clean and tasty. It’s the best choice to treat well water, municipal water, tap water, drinking water, etc. 4-6 Month Service Lifetime: Filtration capacity up to 40,000 gallons, and the replacement cycle is TWO or Three times one year depending on the feed water quality. It’s time to replace filter when the taste of the water is odorous or the water flow is reduced. Recommended for use with melt blown cartridges to extended service life. Compatible Replacement Filters: For ClearChoice 84642, 84641, Pelican CB-BB-20, Pentek 155783-43, EPM-20BB, CBC-20BB, Trojan CB-BB-20, iSpring FC25B, Hydronix CB-45-2005, CB-45-2010, Watts WCBCFF20; For BLUONICS BLCTO20X2, BLCTO20X4, ClearChoice CCS031, Express Water FLTWH2045C, FLTWH2045C02, Geekpure BC20-BB-5, Harmsco HAC-BB-20-W, iSpring FC25BX4, KX Matrikx 32-450-20-GREEN, KX-MATRIKX-CTO2-HD20, Pentek 255678-43, EP20-BB, Purenex 2C-20BB, Ronaqua 2C-20BB, 6C-20BB, RA-2CTO-20BB, Tier1 EP5-20BB, FHR-20-45-CARBON-KIT, COMIN16JU023031, Water Filters Depot (WFD) WF-CB205-BB, Wholesale Market LLC BBCTO-20B4, CTO20B4, MAX WATER USA Inc. 104114-4, etc. Specification: Micron rating: 5 Micron Dimension: 20″ x 4.5″ Max. Pressure: 80 psi Max Temperature: 104°F (40°C) Flow Rate: 10 GPM Applicable pH value: 1-14 Filter Medium: Extruded Activated Carbon Material: Premium Quality Coconut Shell Carbon Lifetime: Replace the cartridge every 6 months or earlier—Depending on your water quality. Warm Notes: *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.Package List: 1 Pack: 1x CTO Water Filter Replacement 2 Pack: 2x CTO Water Filter Replacement 4 Pack: 4x CTO Water Filter Replacement 6 Pack: 6x CTO Water Filter Replacement Please Note: Not all of the items are included in the package, please choose the quantity you need in the selection.On Dec 7, 2023 at 22:08:32 PST, seller added the following information: