North Star® Water Softener, 2-Tank Electronic Demand Point-of-Entry, 13.5 gpm Service/21 gpm Intermittent Flow Rate, 24 VDC/120 VAC 60 Hz Electrical Rating, 70000 Grains Capacity, 20 to 125 psi Pressure, Ultra High Flow Bypass Valve, For Use With: Any Sized Households, 3/8 in Dia x 12 ft L Drain Line, Taupe, 12-1/4 in Dia x 14 in W x 65-3/4 in H, Domestic