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AIR-O-SWISS® 7531 Ultrasonic Humidifier Demineralization Cartridge
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Eliminate mineral buildup in your humidifier water tank with this AIR-O-SWISS demineralization cartridge.
Limit 5 per household.
- Resin granules prevent buildup of mineral deposits.
- Silver-treated to inhibit microbial growth on cartridge.
- One cartridge
- For use with AIR-O-SWISS Ultrasonic humidifiers:
- 7133, 7135, 7142, 7144 & 7145
- Model no. 30879
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