These carts’ Power Management System charges all computers with one outlet and constantly monitors charge levels to send power where it is needed most. Choose from units that hold and charge 20 or 30 computers. A rear access power closet keeps cables neat and out of sight and provides easy access to outlets. Doors and side panels are perforated to vent equipment while charging and power cycles, preventing computers from overheating. Welded frame steel construction with bolting doors and user programmable combination lock provides years of use and deters theft. The 20 computer cart holds computers horizontally and the 30 computer cart stores computers vertically on their side. Includes 5" industrial casters. Certified to UL standards. Grey Mist color. Over all dimensions: 43 3/8"W x 27 3/8"D x 45 1/8"H. Ships fully assembled. Freight class 125.