Purolite SST 60 "Salt Saving Technology" Softening resin.
It works to condition the water while using 1/3 Less Salt than our Standard High Capacity & Fine Mesh Resins. 1 cubic foot.
Use of high efficiency control valves required to achieve maximum benefit.Price is One cu.ft. quantity, but you can select 1/2, 3/4 or 1.5 cu.ft. amounts also.
And while it can be more "efficient", the difference in cost may not make this the best choice.
We recommend using the ResinTech CG8, Sybron C249, or similar "standard" mesh High Capacity resins
for residential water softener applications.Purolite SSTC60 Technical Data SheetBrochure explaining products unique features
And if IRON is the problem you are trying to "handle" with this "shallow shell" Resin,
see this article on how to properly operate any water softener ( any resin ) to remove High Iron,