92 mm (3.62”) Square Cooling Fans These cooling fans are quite popular in electronic equipment including copiers, computers, & data processing. They are available in several voltages and CFM (cubic feet per minute) air flow types. The fans are available with brushless DC or AC motors which are polarity protected. Thickness: 25mm Speed(RPM): 2900 Max CFM: 31 Noise(Db): 30 Bearing Style: Ball Voltage: 120V DC Current: 140mA