This 1U rack mount cooling unit with 4 fan with digital display is designed for applications that requires high volume cooling inside server or net work cabinets. The built-in sensor alarm feature will allow the user to control the max temperature inside cabinet. It also has a built-in sensor fault alarm. It mounts to any standard 19" installation cabinet to provide a maximum airflow in your mission critical server systems. Size: W19" X D11.5"X H1.75"(1U) Fan Size: W4.75XD4.75"XH1.5" Bearing: Sleeve Bearing. CFM: 28 Temperature Range: 0C-50C Current: 0.3A Power: 110V 50Hz/60Hz Warranty: 1 Year.