220v AC Cooling Fan The 220v AC Cooling Fan are powered with a changing voltage of positive and of equal negative value. In general, this changing voltage has a sinusoidal shape. Worldwide, the usual value of this sinusoidal voltage may vary in size and in frequency, These AC Cooling Fans are operating at 220V with a dimension of 120mm*120mm*38mm. This Cooling fan helps your electrical products cool, extends the life of the system, and performs better. DC cooling fans are rugged and resistant to high temperatures. The new fan is of excellent quality and attractive price. Easy to install and draws in hot air from inside the enclosure. Increase the airflow in your system. Cool the entire case.  System life and computer work better. Applications: Computer Case 3D Printer