Honeywell HWM845W Filter Free 1-Gal Warm Mist Humidifier w/Essential Oil Cup BRAND NEW! THE BOX WAS OPENED AND INSPECTED. Filter-Free Warm Mist Humidifier This Honeywell Warm Mist Humidifier delivers a soothing warm mist that provides relief from dry air discomforts. Quiet, filter-free operation allows long-lasting use without the costs of replacing a filter. This warm mist humidifier comes with 2 comfort settings and an automatic shut off function. A refill light has been added to ensure that you'll always be in the know when it comes to adding water to the humidifier's tank. This warm mist humidifier also implements a wide tank opening to discourage spills when refiling its 1 gallon tank. The addition of an essential oil feature encourages the use of essential oils or liquid inhalants. The Honeywell Filter Free Warm Mist Humidifier in intended to be used in medium rooms and is capable of running up to 24 uninterrupted hours per filling. Protec Antimicrobial Cleaning Cartridge The Honeywell Filter Free Warm Mist Humidifier can also use Protec Humidifier Cleaning Balls. Protec Antimicrobial Cleaning Cartridges feature a patented antimicrobial, Aquastat that continuously works to hinder the growth of bacteria and mold. They're also capable of preventing the buildup of slime in the water and humidifier surfaces. Protec Antimicrobial Cleaning Cartridges work in all humidifiers and are safe/non-toxic. Aquastat contains no harsh chemicals or harsh acids making the cleaning action just as gentle as water on your humidifier surfaces and components. Filter free relief from dry air discomfort Wide tank opening for easy fill and clean Essential oil cup- allows for your favorite essential oil or liquid inhalant to be added 2 comfort settings with auto shut-off, when tank is empty Refill light lets you know when water is low Protec Antimicrobial Cleaning Cartridge Replace 1 x every 30 days Filter Free Operation Moisture Type: Warm Mist Room Size: Medium Run Time: 24 Hours on Low Setting Tank Capacity: 1 Gallon Product Dimensions (LxWxH): 10.6 x 6.4 x 11.8 in. Product Weight: 5.29 lbs