ZERO-CLEARANCE DESIGN - Folds flat and closes flush to save space VERSATILE MOUNTING - Mounts on walls of vehicles, garages, and workshops for versatile storage solutions 16" ON CENTER - Mounts on walls with standard 16-inch stud spacing without the guesswork 70 LB. LOAD CAPACITY - Heavy load capacity for tools, materials, and accessories INTEGRATED SIDE RACK BAR - Hang power tools and other items from the sides of your rack shelf for additional storage and easy access QUICK-CONNECT LATCHES - Fast and effortless interlocking connectivity allows you to quickly stack and unstack toolboxes WHAT’S INCLUDED – (1) Rack Shelf, (2) fold flat brackets, fasteners ONE-YEAR WARRANTY - Register your new products and get a one-year limited warranty on your FLEX STACK PACK toolboxes and organizers