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 4-shelf glide-out storage rack measures 7' H x 42" D x 48" 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: 2,000 lbs. per shelf including stationary top level