Open box and unused! Still in box see photos. Box may have some wear/tear Essential RV Water Softener Portable 16,000 Grain w Custom Hose, Long Lasting for RVers Vanlife, 3/4" Fittings, Softens Hard Water When Traveling or Mobile Spot Reducing Car Washing This RV water softener is pre-assembled and features a 3/4" High Flow port and a 16,000 grain capacity for up to 60 days(2000+ gallons) of softened water; ready to go, no electricity required. With low maintenance and easy installation, a 5 year old could do it. Features a rugged NSF Polyethylene tank covered with fiberglass with a 10 3/8" base for stability; Inner contents include NSF 16000 Grain Resin which reduces Calcium, Magnesium, Iron, Lead, Radium, and others. Ready to use right out of the box with the Custom No Kink Water Hose (Included). Easily connect to any water hose connection typically found in campgrounds and parks. Recharge with Table Salt- 2000+ Gallons per charge 1