UCE Series - Ultra PLUS Filter Replacement SetReplacement Water Filter Pack : Contains set of 2 Filters . 01 Micron Ultra Filtration replacement filters for the Under Counter Extreme 9000 Turbo. These filters have a 951 gallon cycle (equivalent to 6 months) by the standard of the passing water quantity of 5 gallons per day. Introducing, Tyent's "Ultra Plus" filtration. These dual, oversized, multistage filters remove every day contaminants such as sediment, chlorine, chloramines and heavy metals,