Tank shown as # 13, PN 7161849 ( 9" x 40" ).
This an empty tank, no resins, or piping include.
Resins and Bottom distributor sold separately.
If you need new resins, then you would want 1 cu.ft. for this size tank.
This works with Sears Kenmore, NorthStar, GE Smartwater Valves and NOT CUNO or MacClean brand