This midsize humidifier offers good looks, compact design and maximum humidification for up to 100 square feet. The digital control panel provides precise humidity monitoring and control. The easy pour in design makes refilling worry free. This uses dual super wick model 1040. Optional 2 stage aircare filter model 1050 is also available for replacement filter. 3-Gallon total water capacity. Measures 17-3/4 l by 9-1/4 w by 13-3/4 h.