filter can be replaced individually, extending the life of the main filter.
3. Built-in air circulation filter to avoid indoor air / heating exhaust to the outside world, the real meaning.
4. To save energy, at the same time meet the national environmental requirements. High-power DC brushless motor, air volume, long life.
5. Low noise design.
6. Extension-type station design, air volume adjustable, directional duct adjustment, positioning freely.