Clear Choice CLCH110 LT500P Refrigerator Water Filter LG 5231JA2002A Filter Replacement, NSF 42 Certified Nsf 42: System tested and certified by iapmo against nsf/ansi standard 42 for the reduction of chlorine taste and odor 6 month/300 gallon filter removes chlorine, odor, contaminants and particulate Clear Choice branded replacement filter fits lg and Kenmore refrigerators Made in the USA