Designed for use with 50 lb ice maker machines. Installation is straightforward and simple, requiring no special tools. For best results, drain approximately 4 gallons of water first. To reduce impurities, replacement is advised every 6 months or after 300 gallons of use. This product fits several models, such as ICE2, F2WC9I1, W10565350, W10480323, 10689553100, 10689593100, 10689599100, JIM158XYCX0, JIM158XYCX1, JIM158XYRS0, JIM158XYRS1, MIM1554ZRS0, MIM1555ZRS0, GI15NDXZB0, GI15NDXZB1, GI15NDXZQ0, GI15NDXZQ1, GI15NDXZS0, GI15NDXZS1, GI15PDXZS0, KUIC15NHZS0, KUIC15PHZS0, KUIC15POZP0, KUIC18NNZS0, KUIC18PNZS0, KUID308ESS0, KUID308ESS1, KUID508ESS0, KUID508ESS1, KUIO18NNZS0, KUIO18NNZS1, KUIS15NNZB0, KUIS15NNZW0, KUIS18NNZB0, KUIS18NNZW0, KUIS18PNZB0, KUIS18PNZB1, KUIS18PNZW0, KUIS18PNZW1, KUIX305EBL0, KUIX305ESS0, KUIX305ESS1, KUIX305EWH0, KUIX505ESS0, KUIX505ESS1, KUID308EBL, KUID308EPA, KUID308EWH, KUIX505EPA, and KUIX305ESS2