When delivered Order it was a used and defective device! There were distinct marks on the device used (scratches, sticky lumps on the rollers etc.). Furthermore, had broken the power of the ventilation and demolished the Velcro fasteners. Besides the fact that the device was completely yellowed (rather than as in the illustration White), dripping device continuously when the humidifier was hired! This is a significant water spot emerged in my apartment! Cooling of the apartment was unfortunately not provided. On the contrary, the temperature rose even. I am therefore unfortunately disappointed in any way of the device and can refer to it only as an absolute bad investment. The unit will return mail to the sender!