The replacement filter for a LG Model # LFX21960ST is the LG 5231JA2006A Refrigerator Water Filter or for an upgraded filter you can use the LG 5231JA2006B / LT600P Refrigerator Filter.
Additional Questions? Email Us or call 866-438-3458
Monday - Friday
9am-12:30pm ET
1:30pm-5:30pm ET