Vornado UH100 Ultrasonic Humidifier with Fan Assisted Humidification IMPORTANT INTERNATIONAL DISCLAIMER: This item is built to meet U.S. voltage requirements and may not function properly when used in conjunction with external devices that alter or convert voltage or frequency of electricity. Improper use or shipping the product outside the U.S. will void all warranties. The Vornado UH100 Ultrasonic Humidifier gives you comfort you can see and feel. Powerful whole room circulation evenly distributes humidity throughout the whole room (up to 600 sq. ft. ) without pooling water on the floor. The built-in humidistat allows you to set your comfort level while the UH100 automatically maintains it. With the SimpleTank System we made carrying, filling and cleaning the tank, well, simple — 1-gallon capacity and 2-gallon output every 24 hours. Easy-to-use push button controls, 3 fan settings (High, Low and Auto), simplistic design and the peace of mind of a 5-year satisfaction make the UH100 anything but ordinary. Vornado MD1-0002 Replacement Humidifier Wick (2-Pack),White IMPORTANT INTERNATIONAL DISCLAIMER: This item is built to meet U.S. voltage requirements and may not function properly when used in conjunction with external devices that alter or convert voltage or frequency of electricity. Improper use or shipping the product outside the U.S. will void all warranties. At 7.25"H x 9.5"L x 1.5"W, this pack of two (2) wick filters is designed to fit select Vornado humidifiers. The filter must have the correct height, width, thickness, and material for maximum performance. Competitors often advertise their filters will work with Vornado humidifiers but these filters don't always fit properly, therefore, the humidifier will not work effectively. Vornado wicks are developed from the highest quality materials that work to absorb the maximum amount of water while filtering the circulating air. Competitor brands are made of different materials not designed for Vornado humidifiers. These humidifier replacement wicks, part number MD1-0002, work with models Evap3, Evap1, Model 30, and Model 50.