OnePurify RFC0900A3PK UKF8001, Filter 4 Compatible Refrigerator Water Filter (3 Pack) Healthy Choice: Our Active Carbon Block Filter is designed to reduce levels of chlorine off-flavors & odor, lead cysts and other impurities & contaminants. For optimum performance replace every 6 months Easy to install: Simple and clear instructions Affordable Option: Costs less than OEM filters without compromising any quality or flow rate Certified Performance: WQA Certified. Manufactured in an ISO9001 / FDA Registered facility Comparable Part Numbers: UKF8001, Filter 4, 469005, 4396395 (see product description below for more compatible models) Healthy choice of purified water for you and your family. When your water tastes good you drink more of it.