Brand new and high quality. Made of high quality materials, more durable. This tank cleaner reduces up to 99% of the odor causing bacteria, unsightly mold and algae growth. This humidifier demineralization cartridge helps prevent and reduce white dust caused by minerals in hard water. This hard water "dust" may contain calcium, calcium or magnesium. Demineralization filters can help extend the life of your humidifier by purifying the water, preventing unpleasant odors. The demineralization cartridge works for HoMedics UHE-CM65, UHE-WM70, UHE-OC1, UHE-HDC4, UHE-CM45B, HE-CM25, UHE-CM25, UHE -WM16, UHE-OW14, UHE-WM85.Fit evaporation, warm and cool ultrasonic humidifier, most humidifier such as Vicks, LEVOIT, Honeywell, Homasy. Filters work with all HoMedics 1-gallon or larger ultrasonic humidifiers. Each demineralization cartridge receives 30-40 full tank uses. Just drop one humidifier carbon filter into the humidifier tank and it will start working. One humidifier cleaner can be used in humidifiers with a tank size up to one gallon. Replace every 30-60 days. Color: As shown Material: Plastic Size: 4.57 x 2.28 cm Package Contents: 10 * Humidifier Tank Cleaning Cartridge Only the above package content, other products are not included. Note: Light shooting and different displays may cause The color of the item in the photo will be a little different from the real one. The measurement error is +/- 1-3cm.