The Honeywell Ultrasonic Cool Mist Humidifier makes a welcome companion in drier months. This compact and powerful humidifier emits a cool and clean mist that eases dry nasal passages and raw throats, making it excellent for those inevitable colds. The reservoir tank holds up to 1-gallon of water for hours on uninterrupted use with a top-fill design for your convenience. Several settings allow you to choose a gentle mist or a powerful cloud. The unit shuts off automatically when the tank is empty. An ultra quiet operation means you'll hardly notice the humidifier, even when it's working its hardest. Dimensions: 9.6L x 9.2W x 14.6H in.. Handles rooms up to 172 square feet. 1-gal. reservoir with top fill design. Several moisture setting options. Extra quiet operation. Manufacturer's limited 2-year warranty.