Ultrasonic Humidifier Demineralization Cartridges - 4-Pack
Sharper Image Ultrasonic Demineralization Cartridges are the easy way to prevent hard water stains and keep your unit running smoothly.
• Includes 4 demineralization cartridges
• Prevents calcium and lime build-up
• Compatible with Sharper Image humidifier models EVHD10, EVHD15 and EVHD20
• Replace the cartridge every 30 or 40 fillings, depending on your water hardness
• Not necessary to use distilled water when using cartridge