Multi-Tank Water Softener Single Tank Maximum Grain Capacity 43 000 Brine Tank Capacity 160 lb Total Number of Tanks 2 Number of Resin Tanks 1 Number of Brine Tanks 1 For Household Size 3 to 4 People Brine Tank Diameter 15 in Brine Tank Height 34 in Grains Capacity at 4 lb/cu ft Salt Dosage 24 000 Grains Capacity at 6 lb/cu ft Salt Dosage 30 650 Single Tank Maximum Flow Rate Scale 27 gpm Single Tank Maximum Resin Capacity 1.5 cu ft Single Tank Regeneration Water Used 77 gal