Twist-In 5 micron Sediment filter cartridge: recommend replacing every 6 months*Twist-In 5 micron Solid Carbon Block filter cartridge: recommend replacing every 6 months*Twist-In RO Membrane filter cartridge, 100 GPD: recommend replacing every 1-2 years*Twist-In color changing Deionization cartridge: replace when the resin color changes completely
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Item# : SPM12750572704
Model # : RNAB07D8DDM1X