The Culligan D-10A Basic Pleated Carbon Impregnated Cellulose Replacement Cartridge delivers clean clear great-tasting drinking water at your kitchen sink. The D-10A reduces bad taste and odor aesthetic chlorine taste and odor and sediment. D-10A is for use with model US-600A under-sink water filter system and is for point-of-use under-sink applications only. The filter is not recommended for use with non-treated well water supplies and is not for point-of-entry whole house applications. Cartridge life lasts up to 3 months or 250 gallons depending on water quality. Culligan makes getting cleaner water safe easy and convenient. With whole home filters under-sink filters shower filters and more we have all your filtration needs covered. Visit our website to schedule your free water test or an appointment with your local Culligan water expert.