What do you do when your safe is full? Don't fret. Lockdown's Under Shelf Vault / Gun Safe Drawer will solve your storage woes. This space-saver installs to the underside of a shelf that is wide and deep enough to accommodate it. It holds a variety of items like a handgun, ammo clips, jewelry, credit cards or a passport. The wire frame slides over any shelf up to one-inch thick and utilizes 11.5" x 12" worth of previously unused space. A retaining bar butts up against the tray's molded lip to keep the drawer from being pulled all the way out.