... weight, large air volume, low noise, high strength, low vibration, high Wen Jia, long life advantages.The perspective of ... of development and characteristics of the design changes.Blower motor shaft by the use of security film ... oil, a fuel-free life of 15000 hours.Blower efficient use of the small size of the design ... 220V 40 / 42W, blade diameter 50MM, length 42CM:. high quality cross flow impeller