Requires a 1/2" hole

We recommend adding this POSITIVELY charged CATION resin cartridge to remove your specific NEGATIVELY charged dissolved solid ions

Sump top off is one example of a small volume of water per on - off operation

Input : 120V AC

Buy CATION resin media in bulk and refill yourself

6 Pack Filters Membranes Requires a 1/2" hole6 Pack Filters Best Value. Standard 10" Size. Fits all standard RO Units includes: 2 x Sediment 10 Micron, 2 x Coconut Carbon Block 5 Micron or Catalytic Carbon, 2 x Coconut Carbon Block 1 Micron For use on all 10" RO systems, where you have 3 cartridge housings across the bottom. Fits all standard 10" housing units. Dimensions and Weight: Height : Standard 10 " x 2. 5 " Weight : 6 pounds Illustrations Diagrams Instructions: How to Change Filters