Vault space is always a premium! With limited shelf space, try using this Vault Drawer which mounts to the underside of any shelf. It provides 11.5" w x 12" d x 2" h worth of previously unused space. Perfect for a variety of loose valuables and documents. The wire form frame slides over any shelf up to 1" thick. The frame's retaining bar butts up against the tray's molded lip to keep the user from pulling the drawer out too far and spilling its contents. ? Quickly attaches to any vault shelf ? Takes advantage of unused space under shelves ? Organizes jewelry, handguns, small valuables, etc. ? No tools needed to install