iSpring Box of 25: CTO Carbon Block Water Filter Replacement Cartridge, Compare to KX Matrikx, Pentek, OmniWater Filter Replacement Cartridge, Hydronix

An anti-scale water filter system that protects your pipes and household appliance from scale, corrosion, and more - The FWDS150K patented scale Inhibitor effectively sequesters calcium and magnesium. It also inhibits corrosion, particularly iron, steel, galvanized, copper, and lead, by coating the surface of your pipes. The coating serves as a protective layer that makes it harder for bio-film to form. It also helps to stabilize chlorine as the chlorine will not react with the metal pipe if the coating exists. This water filter has a capacity of 250,000 gallons of water filtration.

Exactly what we were looking for in our new house! Price point is amazing compared to others that we looked at.. Anonymous. Thu May 21 2026

iSpring Box of 25: GAC Granular Activated Carbon Water Filter Replacement Cartridge

I have had similar products in the past and I bought this one for the house that we are building. This filter is made better then the ones we had in the past.. Cathleen. Sanford, CO. Wed Apr 12 2017

Dedicated 2-year filter (FCF500x4, MRO500, FCA500x2) for iSpring RO500AK tankless reverse osmosis system.