Pentair Water Softening WS-10 RESIN CARTRIDGE Part #155319-03
✔️ Convenient cartridge change-out.
✔️ FDA grade softener resin.
✔️ 750 to 4500 grain capacity available (grains as CaCO3)..
*Great News! You can Mix & Match ALL Water Filters & Accessories to take Advantage of our Quantity Breaks Pricing!
Product Number SMF 155319-43