This filter is 11 inches long – please double-check your old filter’s size before ordering. Not sure? Contact us! Compatible models: ULTRAWF, Pure Source Ultra, 1000472026, 203618461, 242017800, 242017801, 242017802, 242069601, 3957684, Kenmore 46-9919 46-9999, 469999, 9919, 9999, A0094E28261. The list models is for reference purpose only, we are not sponsored by the original brand. Effectively Filtration Performance: 4U PURE reduces chlorine, taste and odor, lead, mercury and other harmful heavy metals, while remain beneficial minerals like calcium and magnesium. Easy Installation: Perfect fit your refrigerator without risk of leakage. 3s installation without any tool required. NOTE: To achieve maximum effectiveness from your filtration system, we recommend releasing roughly 4 gallons of water before using it for the first time. Our multi-stage filtration system, certified to NSF/ANSI 42 standards, uses premium coconut shell carbon and dual ionization stages to reduce chlorine and impurities