The Culligan® D-20A Basic Filtration cartridge reduces bad taste & odor and aesthetic chlorine taste & odor. The replacement cartridge fits model US-600A. The cartridge is for point-of-use under-sink applications. The filter is not for point-of-entry whol

The Culligan® D-20A Basic Filtration cartridge reduces bad taste & odor and aesthetic chlorine taste & odor. The replacement cartridge fits model US-600A. The cartridge is for point-of-use under-sink applications. The filter is not for point-of-entry whole-house applications. The cartridge life is up to 12 months or 1,000 gallons.