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This replacement filter cartridge is compatible with the H2O 4 X and the H20 4 EZ Distilled Water Filtration System. It eliminates calcium, manganese, and other impurities from tap water, ensuring distilled water suitable for your CPAP or BiPAP humidifier. *Each cartridge lasts around 30 days and yields about 3.25 gallons of ion-distilled water.
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🇺🇸 Ship from USA · On Agora since 2026
$7.95