More and more people understand that the "perfect water" system would combine the purity of Reverse Osmosis (R/O) and the tremendous benefits provided by alkaline, ionized water. Historically this has not been easily achieved for a variety of reasons. Water technology experts have solved the problem of combining these two phenomenal yet very different water technologies. Now you can have perfectly clean AND perfectly healthy water by installing the R/O system before your Jupiter ionizer! Size of tank with stand is 12" wide by 15" high. Size of filter section is 13" wide, 17" high and 6" deep