Fits the following LG refrigerators (full list below)- LFX25778SB, LFX25778ST, LFX25778SW, LFX25973D, LFX25973SB, LFX25973ST, LFX25973SW, LFX25974SB, LFX25974ST, LFX25974SW, LFXS24566S, LFXS24626D, LFXS24626S, LMX25964SS, LMX25964ST, LRSC21934SB, LRSC21934SW, LRSC21934TT Reduces chlorine, taste and odor to deliver pure clean and refreshing water. Long lasting up to six months or 300 gallons. Tested and certified by NSF R & T to NSF/ANSI Standard 42. Will fit and lock in all compatible refrigerators.