3M Aqua-Pure Aqua-Pure AP431, Hot Water Heater Scale Inhibitor System Replacement Cartridge

The AP430SS products are ideally suited for installation on the supply side of a water heater and help to maintain maximum system efficiency and help extend their life. Features: Contains Silliphos, a 100% food grade scale inhibitor approved by the USDA. Helps protect piping system from corrosion Easy to install and change out cartridge Inhibits scale build-up in hot water heaters (both with and without tanks) and water using appliances Maintains efficiency and extends the life of hot water systems High capacity, change every 4-6 months Housing Unit: AP430SS Hot Water Heater Scale Inhibitor System