Available in two different models, the CPU Locker is an affordable theft deterrent solution for your valuable tower CPU. The CPU Locker also secures your information by denying access to CD and floppy drives. Installs easily beneath or on top of a desk or countertop. Overall Size: 8" Wide x 16" Deep x 18" High. Maximum CPU Size: 5" Wide x 14" Deep x 13.5" High. The rear is vented for added circulation.