Name: Cross flow fanMaterial: AluminumSize: wheel diameter 30-200mm, or as customers requestMotor: it is designed suitable silent operation by using selectedmotor of low-noise and high-efficiency. It is UL certified.Description: distribution of air velocity is uniformUsage of cooling device: power source device, transformer,duplication machine, projector, etc.Cross flow fan, tangential fan,tangential blowerMore detail please feel free to contact me.