Window Air is a product for those who live in a space without a window. here still are many people who live in a deteriorated space without a window. If there is no window, it is difficult to ventilate and impossible to predict the weather outside. Living in a tiny windowless space makes it feel stuffy. Window Air, however, gives the feeling of having sunlight coming in through the window, ventilates the room, and tells the weather outside. In a word, Window Air is a good product that plays the role of a window.