This convenient vault drawer easily mounts to the underside of any shelf and offers 11.5"W x 12"D x 2"H worth of space. Perfect for a variety of loose valuables and documents. Wire form frame slides over any shelf up to 1" thick. Frame's retaining bar butts up against the tray's molded lip to keep the drawer from pulling out too far and spilling its contents. No tools required to install. Mounting bracket dimensions: 14"W x 14"L x 3"D.