The Antunes Point-of-Use (POU) Water Softener Systems, 6″W x 27″H, capacity: 2,667 grains @ 4.0 lbs salt, 5,400 grains @ 9.0 lbs salt, 6,200 grains @ 15 lbs salt, 15 PSI, 1 gpm drain flow, 2.9 gpm max flow rate, 34-110 ̊F operating temperature, 40 VA, 0.33 Amps, 120v/50/60/1-ph