1. Wheel Diameter   300 ~ 1,200mm 2. Air volume   60 ~ 7,000 �/min 3. Out velocity  8~25m/s  4. Pressure  20 ~ 180 mmAq 5. Characteristic  - Light weight using plastic of high strength glass fiber material 6. Easy handling  - The variable-wing structure allows great wind control with high efficiency and volume adjustment     over a wide range of wings.  - Ventilation through ducts of the tunnel building, factory and so forth.  - Cooling and drying of an apparatus.
