New and high quality. Made of high-quality materials for increased durability. This tank reduces up to 99% of odor-causing, unsightly mold, and algae growth. The humidifier demineralization cartridge helps prevent and reduce white dust caused by minerals in hard water, such as calcium, lime, and other minerals. Demineralization filters help extend the life of your humidifier by purifying water and preventing odors. Compatible with UHE-CM65, UHE-WM70, UHE-OC1, UHE-HDC4, UHE-CM45B, UHE-CM25, UHE-WM16, UHE-OW14, and UHE-WM85 models. Fits evaporative, warm, and cool mist ultra humidifiers. Works with all 1-gallon or larger ultra humidifiers. Each demineralization cartridge lasts for 30 to 40 full tank uses. Simply place one charcoal filter into the humidifier tank to begin operation. One filter is suitable for humidifiers with a tank capacity up to one gallon. Replace every 30 to 60 days. Color: as shown. Material: plastic. Size: 4.57 x 2.28 cm. Package includes: 10 x Humidifier Tank Cleaning Cartridges. Only the items listed are included; other products are not part of this package. Note: Lighting and display differences may cause slight variations in color appearance. Measurement error allowed is +/- 1-3 cm.