[Features] ●Vaporization heat of water is used to convert hot outside air into cool air and supply a large amount of air. ● You can feel the coolness with the large air volume. ●Excellent cost performance. ●Since the air is cooled by the power of nature, the electricity bill can be kept down overwhelmingly at a low price compared to air conditioners with the same level of cooling capacity. ● Creates an environment where insects, dust, and hot outside air are less likely to enter with a large amount of air supply (positive pressure). ●Since it is designed to be installed on the roof or outdoors and deliver cool air to the work area with a duct, it does not interfere with the work space.