The LG LT600P 5231JA2006A 46-9990 EFF-6003A and EFF-6004A most compatible best in class and technology replacement refrigerator water filter by Internationally Certified Swift Green Filter SGF-LA50.Swift Green Filters will deliver fresh clean and great tasting water and ice cubes. Designed with technology using recycled coconut shells that create an internal carbon filter with up to 50% more filtering pores. The result is safe and clean drinking water that has eliminated contaminants and impurities that may have been present.100% recyclable.