The 3 Pack Fridge Filter by DRINKCLEAR is designed for use with ULTRAWF, Pure Source Ultra, and Kenmore 46-9919, 46-9999 water filters. This pack includes three filters specifically compatible with Kenmore models, ensuring a clean and fresh water supply for your fridge. The ULTRAWF Pure Source model is a reliable and efficient water filtration system, perfect for keeping your water pure and crisp. With this pack, you can enjoy clean and great-tasting water for an extended period of time.