Also known as the ladder of the air outlet, the air flow is sent out, the higher the induction rate of the temperature and the noise is small, the form can be re designed according to the scene, according to customer requirements, in order to meet the characteristics of buildings; air temperature difference can reach 6K; ±. Place to be used: suitable for theater, auditorium, classrooms ladder, step meeting room, concert halls, cinemas and other occasions, the ladder vertical side or on the floor.