On The Go OTG4-StdSoft-Portable 8,000 Grain RV Water Softener On The Go Standard Softener-Features easy to carry handle, large mouth opening for easy salt addition, quick and easy regeneration, easy and fast hook-up and its compact space-saver design results in much lighter weight The softener provides soft water that prevents hard water & rust stains, avoids scale build-up, improves taste and odor, increases lifespan of appliances and will also improve rough dry skin while increasing lathering of soaps. Built for the owner of any RV/Marine model, this 8,000 grain unit is a perfect fit. It simply regenerates with 1 box of common table salt in less than 15 minutes and provides the owner with soft water up to 20 days. It's compact size allows it to be installed in the tightest places. It will allow high flow rates with very low pressure drop. It utilizes a standard garden hose connection between park faucet and your RV, requires NO tools or electricity and its compact design 22 h X 6.75 dia. can be easily stored in your storage bay or dock side locker.