1 gal. output cool mist humidifier with FilterCheck filter monitor to tell you when to change your filter. Arm & Hammer odor removal, 2 speeds high and low, runs up to 18 hours per filling, perfect for small rooms. Features: Perfect for small rooms Runs up to 18 hours per filling 2 speeds High and Low Filtered with Arm and Hammer? baking soda FilterCheck? Filter Monitor Output: 1 Gallon Room Size: Small Run Time: 18 hours

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