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This high-quality filter is not an original OEM part but is designed to replace discontinued filters, or filters that are out of stock. 

Boneco Air O Swiss Compatible Demineralization Cartridge 3 Pack

Fits Boneco & Air O Swiss ultrasonic and steam humidifiers model 7133, 7135, 7142, 7144, 7145, 7147, U600, U650, 2055, 2055A, E2441, U200, U700, S200, S250 and S450.

If your Boneco or Air O Swiss humidifier uses the AquaPro A250 filter, this Demineralization Cartridge is the perfect replacement—offering excellent performance and reliable results.

Upgrade your humidifier with our easy-to-use demineralization filter! Designed to minimize mineral buildup (white dust) in the air, this filter ensures cleaner, purer moisture. Simply screw it onto your humidifier tank and enjoy 2–3 months of efficient, worry-free operation.

Keep your humidifier running smoothly with our demineralization cartridge! Designed to minimize mineral buildup (calcium and lime) and reduce white dust caused by hard water, this cartridge not only helps maintain cleaner air but also extends the life of your humidifier and simplifies regular maintenance.