SpiroPure SP-WS-20BB 20” x 4.5” Cation Resin Liquid Softener Cartridge WS-20BB 155321-43 (Case of 4)

Made with cations, sodium-form resin ion-exchange media with polypropylene pre & post filters Utilizes a bed of sodium form cation resin beads for reduced hardness and scale deposits Offered in nominal sizes of 10x2.5, 10x4.5, 20x2.5, and 20x4.5