* 225UP, System upgrade kit, 5th stage (or 6th stage in some systems) Inline Alkaline filter with clear housing, two UU clips and two elbow fittings
* Alkaline filter for 6-stage RO/ Alkaline water system
* Add this filter to your existing 5 stage RO system to make the output water more alkaline (higher pH)
* Adding Calcium and Magnesium minerals back to the water after RO process, so the pH level ranges between 8.5 to 9.5
* Recommended to replace once a year
* Dimension: 2" x 10"