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4056 axial cooling fan is a dropin replacement for DFTA0456B2H. With dimension of 40×40×56mm, this compact 40mm fan runs at DC 12V 1.50A and produces powerful highspeed airflow. It effectively removes heat generated by server chassis, network switches and industrial control cabinets during roundtheclock operation. Premium bearing reduces friction and noise while extending service life. Robust frame and blades keep stable under regular industrial temperature changes. Standard mounting holes enable simple installation. It is an ideal repair solution for noisy, stuck or failed original cooling fans. Please confirm fan dimensions and electrical parameters before purchase for correct compatibility.