Compatible modelCompatible Replacement Filter for Waterdrop 15UA under sink water filter system (ASIN B083NR5DVY), 15UB under sink water filter system (ASIN B089CVMPGR) and 15UC Inline Water Filter for Refrigerator (ASIN B085G9T9TB). Compatible with all three methods of connection, this undersink filter brings you purified water from your original faucet, your dedicated faucet, or your refrigerator. Get easy access to clean, safe, and healthy purified water with Waterdrop! Ultra-long service lifeWhen used with municipal water, each Undersink Water Filter has a maximum service life of 2 years or 19,000 gallons.[1] Solve Clogging Problem By upgrading the filtration area, our filter now provides a 20X increase in dirt adhesion area, enhancing filtration capability while minimizing the risk of clogging. Innovative multistage filtrationThe Waterdrop Undersink Water Filtration Replacement Filter uses innovative multistage filtration. And it can effectively reduces PFOA/PFOS, PFAS,