Comparison : Item # 150-2, Culligan® Side Mount (CSM™) Series 5 Cubic Feet (ft³) Resin Quantity and 2 Inch (in) Pipe Size Water Softener System
Item # 210-2, Culligan® Side Mount (CSM™) Series 7 Cubic Feet (ft³) Resin Quantity and 2 Inch (in) Pipe Size Water Softener System
Item # 300-2, Culligan® Side Mount (CSM™) Series 10 Cubic Feet (ft³) Resin Quantity and 2 Inch (in) Pipe Size Water Softener System
Item # 300-3, Culligan® Side Mount (CSM™) Series 10 Cubic Feet (ft³) Resin Quantity and 3 Inch (in) Pipe Size Water Softener System
Item # 450-2, Culligan® Side Mount (CSM™) Series 15 Cubic Feet (ft³) Resin Quantity and 2 Inch (in) Pipe Size Water Softener System