Includes 3 filters: Compatible with Kenmore 9084, 9006, 46-9006, Filter 4, Puriclean II/Matag UKF8001, UKF8001 AXX, AXX-200, AXX-750 water filters. NSF Certification: PERCOLA water purifiers are made from natural coconut carbon block material and are NSF 42 and 372 certified. It removes over 99% of suspended solids from water and removes some impurities such as sediment, chlorine taste and odor. Easy to Install: Twist and lock designed. Saves your time and effort with tool-free installation and leak-free fit. It is quick and easy to replace the filter by just taking several seconds without leaks. For its perfect compatibility, you will never worry that unfit or loose replacement filters will cause the refrigerator to leak water and damage your kitchen floor. Long Life Cycle: Your package includes 3 filters. Please prime 3-4 gallons of water before use for better taste. These filters should be replaced every 6 month or 300 gallon.