The lower edge of the drainage hole is less than 10 centimeters from the ground, and the distance from the ground is about 50 centimeters, the advantages of cylindrical box air conditioning, occupying an area of less than the cabinet machine, the air supply Angle and area of the cabinet machine are large, the noise suppression is slightly stronger than the square cabinet machine, and the outer cabinet machine usually uses the frequency conversion model design, which is slightly more advantageous than the ordinary square cabinet machine in terms of energy saving and aesthetics.