When tools and die are heavy and require hoisting or reaching deep into the storage bay, 100% extending roll-out storage is what you need. This 2-shelf glide-out storage rack measures 4' H x 60" D x 60" W. Auto-lock system allows only one drawer to be opened at a time, which helps prevent overbalancing the rack. Use for storing stock parts and equipment, to increase storage density, and to protect expensive tooling and die. Load capacity: 3,000 lbs. per shelf including stationary top level