Dry room air is drawn into the humidifier through the exclusive air-cleaning DynaFilter helping to remove dust odors and tobacco smoke. Water is pulled up through the pick up tube. Pressure in the vortex chamber breaks water into a superfine mist. The mist mixes with dry room air helping to restore healthy humidity levels. Convenient on-off switch for easy control. Durable no break plastic construction. 1.5 gallon capacity (5.7 liter). Operates approximately 24 hours on a single filling.Other products from HerbsPro