Vortex Action fully circulates humidity throughout the room - up to 300 sq. ft.</br>1 gallon tank capacity provides up to 1 gallon output every 24 hours</br>3 fan settings (low/high/auto)?? push-button controls?? electronic humidistat?? and automatic humidity control</br>The crystal-clear SimpleTank System provides for an easy to carry?? fill?? and clean water tank</br>Removable ou