Comparison : Item # HCE-450-3, Culligan® Hi-Flo® 3e Series 15 Cubic Feet (ft³) Resin Quantity Water Softener System
Item # HCE-600-3, Culligan® Hi-Flo® 3e Series 20 Cubic Feet (ft³) Resin Quantity Water Softener System
Item # HCE-900-3, Culligan® Hi-Flo® 3e Series 30 Cubic Feet (ft³) Resin Quantity Water Softener System
Item # HCE-1200-3, Culligan® Hi-Flo® 3e Series 40 Cubic Feet (ft³) Resin Quantity Water Softener System