Product Description Product Description Premium EZ Change replacement cartridge provides clean, great-tasting water for drinking and cooking. The RC-EZ-4 basic filtration cartridge is compatible with Culligan US-EZ-1, 3 and 4 systems and can filter 500 gallons and last up to 6 months. Avoid the mess of changing traditional cartridges and eliminates the need for buckets, towels, wrenches, and other tools. Tubing and installation hardware is included. From the Manufacturer The Culligan RC-EZ-4 EZ-Change Level 4 Replacement Cartridge is a drinking water replacement filter that reduces bad taste and odor, Chlorine taste and odor, sediment, lead, and cysts such as Cryptosporidium and Giardia, Mercury, Turbidity, Particulate Class I, VOC's, MTBE and Chloramines. From the Manufacturer The Culligan RC-EZ-4 EZ-Change Level 4 Replacement Cartridge is a drinking water replacement filter that reduces bad taste and odor, Chlorine taste and odor, sediment, lead, and cysts such as Cryptosporidium and Giardia, Mercury, Turbidity, Particulate Class I, VOC's, MTBE and Chloramines. Provide your family with visibly clean, great-tasting water for drinking and cooking FEATURES: Reduces water bad taste and odor, Chlorine taste and odor, sediment, lead, and cysts such as Cryptosporidium and Giardia, Mercury, Turbidity, Particulate Class I, VOC's, MTBE and Chloramines; Can be installed in your EZ-Change filter system under the sink or in the refrigerator for clean water and ice COMPATIBILITY: Works with Culligan US-EZ-1, US-EZ-3 and US-EZ-4 systems FILTER LIFE: Up to 500 gallons or 6 months depending on usage and filtration load CERTIFICATION: Tested/certified by IAPMO to NSF/ANSI Standard 42 for the aesthetic reduction of Chlorine Taste/Odor, Chloramines, and Nominal Particulate Class 1; Standard 53 for reduction of Cysts, Mercury, lead, VOC, MTBE and Turbidity