快门式工业排风扇，是专为建筑内部排气而设计的。
Shutter Mounted Industrial Exhaust Fan is designed for use inside the building with vents outside.
快门式工业排风扇根据型号，刀片直径分别为12英寸，18英寸，24英寸或30英寸。
Shutter Mounted Industrial Exhaust Fan models are available with a blade diameter of 12 ", 18 ", 24 "or 30".
快门式工业排风扇根据型号，刀片直径分别为12英寸，18英寸，24英寸或30英寸。
Shutter Mounted Industrial Exhaust Fan models are available with a blade diameter of 12 ", 18 ", 24 "or 30".
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