●💧PEFECT FIT -- Compatiable with Homedics UHE-CM65, UHE-WM70, UHE-OC1, UHE-CM45B, HE-CM25, UHE-WM16, UHE-OW14, UHE-WM85. Compare to demineralization cartridge UHE-HDC4. ●💧WIDELY COMPATIABLE -- Compatible with all HoMedics 1-gallon or larger ultrasonic humidifiers. Fit evaporative, Warm & Cool Mist Ultrasonic Humidifier, most humidifier. ●💧PREVENTS MINERAL BUILD-UP -- The ultrasonic filter helps to decrease the white-dust caused by minerals in hard water. This hard-water“dust”can contain calcium,lime or magnesium. ●💧EASY TO USE -- Simply drop 1 Ultrasonic Demineralization Filter into your humidifier tank to begin enjoying clean, pure mist. Replace cartridge every 30 to 40 fillings, depending on the water hardness. ●💧ECONOMIC WATER CLEANSER -- Package Includes 12 blue ultrasonic humidifier demineralization cartridges. Have any questions, please contact us and we will answer ASAP.