Image is Representational - See Manufacturer Specs | DC Fan Axial Ball Bearing 24V 18V to 28V 27.1CFM 39dB (60 X 60 X 25.4mm) Low Noise The 620 series DC Axial Fan is suitable for high air performance with moderate pressure build-up. The flow of air through the fan blades is parallel to the rotation axis. They are extremely flat and space-saving integrated motor. Every single type of fan can be optimally integrated in the respective device concept. The highly economical brushless motor technology of these fans provides unique variety of intelligent innovations. The DC fans have electronically commutated drives with electronic pr