super silence ,NANYOO unique design

1.With outdoor and indoor air supply pipe connected to the outer wall pipe insulation to be done to deal with.
2.Outside in the cold regions and high wind speed sites, outdoor indoor air may be invasive.
3. Connected with the outdoor installation of two pipelines in the outer room to tilt, to prevent rain intrusion.
4.Shows the direction must be installed (repair mouth down), or may not be able to repair.
5. When the wind pipe connecting the outlet on the label must be shown to connect the corresponding air duct to prevent condensation.
6.In addition to the above dimensions of the thickness of insulation material on the outside of body size