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Replacement Cartridge Set AQ-4025 for Aquasana® AQ-4000
Cartridges A & B, Lasts 6 months/500 gallons!
New cartridge o-rings also included.
Filters last 6 months/500 gallons.
Filters out; lead, chlorine, VOCs, MTBE and chlorine resistant parasites/cysts.
Sub micron filtration. | 
