Check the listing for details. Waterdrop U2 Under Sink Ultra Filtration Water Filter, Replacement for TST-UF. Condition: New. Listed at 36.99 USD. Product DescriptionUltra-long Life Reduces Replacement FrequencyThe under counter water filter is equipped with a housing, allowing you contribute to saving the environment. The maximum 12 months lifespan means there is no need for frequent replacements. You are saving time, money, and efforts, while protecting the planet.Convenient ReplacementThe housing design allows you to quickly replace the inner filter by just unscrewing the external housing and changing the internal filter.1.59 GPM Large Water FlowThe flow rate can get as high as 1.59 GPM, which means you can fill a 8oz cup of water in 2.3 seconds. Water flow remains stable even at high speed.WD-U2WD-P1WD-C3WD-TST-UFRecommended replacement cycle12 months6-8 months12-24 monthsPP- 6-8, UF- 12, CT-12-24MthsReductioncontaminant larger than 0.01μmlarge particle filtertaste and odor of the waterbaçtёria larger than 0.01μmCompatible modelWD-TST-UFWD-TST-UFWD-TST-UF--Reduce TDSXXXXDimensions (inch)10.51 x 3.03 x 2.91 inches10.47 x 3.07 x 2.95 inches10.47 x 2.99 x 2.95 inches14.49 x 4.92 x 12.99 inches