3M Aqua-Pure Whole House Standard Sump Replacement Water Filter Drop-in Cartridge AP420, 5560907

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About This Helps Inhibit Scale: Polyphosphates included in this cartridge bind calcium and magnesium hardness minerals, preventing them from becoming a solid to help reduce the bui ld-up of mineral scale in pipes and water using appliances Average cartridge life: 6 months (incoming water quality may affect cartridge life) Grooved surface increases total surface area for longer cartridge life compared than non-grooved filter cartridges Rigid construction helps to eliminate sediment “unloading” due to variances in water pressure Materials are FDA CFR-21 compliant Overview Material : Polypropylene (PP) Product Dimensions : 2.98"D x 2.98"W x 9.8"H Item Weight : 2 Pounds External Testing Certification : NSF Product Benefits : Inhibits Lime-Scale Growth, Reduces Sediment Show more