There aren't many things more refreshing than a glass of water. However, municipal water can carry unwanted contaminants, like lead and chlorine. That's where the 5231JA2006B water filter comes into play. The 5231JA2006B water filter passes water through activated carbon which removes many of the contaminants found in tap water. As a replacement, we offer the LG LT600P water filter that is made from OEM parts. The filter has been tested and certified to meet NSF Standard 42 and Standard 53, which means it has been certified to reduce chlorine levels and remove lead, cysts, chemicals, and other impurities from your water. The LG replacement filter has a 300 gallon filtering capacity with a water flow rate of a half gallon per minute. We recommend changing the filter once every 6 months to ensure that your water is clean, pure, and healthy. All of our discount filters come with 100% free shipping AND returns. Other alternate fridge models that can replace the 5231ja2006b are 5231JA2006B-S, EFF-6004A, LT600P and the SGF-LB60.