Rolling steel cart Includes four Premium Tech Tubs™, each with a foam-padded, steel insert that holds five iPads® or tablets and is vented to prevent overheating. Each tub functions as a recharging station and includes a six-outlet power bar with 8' cord, locking block with pin, cable hooks and two padlocks for security. Steel cart with swivel casters (two locking) has doors that lock for extra security and fold flat against the sides when open. 21¾" wide x 18¾" deep top shelf holds laptop, projector, document camera or instructional materials. Overall size: 42" high x 32½" wide x 19¾" deep. Ten-year frame warranty.