North Star® Grain Water Softener, Point-of-Entry, 9.9 gpm Service/17.8 gpm Intermittent Flow Rate, 42100 Grains Capacity, 16.3 lb Salt Storage, 20 to 125 psi Pressure, Ultra High Flow Bypass Valve, Gray, 17 in Dia x 21 in W x 48 in H, For Use With: Any Sized Households, Domestic