I bought a box of 4 cartridges but only needed to use 1 cartridge. I am selling 3 sealed zero water cartridges. x3 Zero Water 5 Stage Advanced Filtration Replacement Water Filter Premium 5 Stage filtration with Ion technology - Removes over 99% of all dissolved solids in tap water - Only filter certified to reduce Lead, chromium and PFOS/PFAS - Eliminates all limescale from appliances
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