LG 5231JA2006A Refrigerator Water Filter Have great tasting water for just pennies on the gallon Filter replacement is quick and easy Removes 93.2% of particulates (Class I) and 97.4% of chlorine taste & odor For cleaner, fresher water and ice, the LG 5231JA2006A Refrigerator Water Filter should be replaced every 6 months Every 6 months or When the filter change indicator light comes on,The 5231JA2006A is interchangeable with the LT600P/5231JA2006B however, it removes less impurities.