The Member's Mark 24-Bin Rolling Rack is great for schools, offices, workshops, craft spaces, restaurants, garages or just about anywhere that requires a bit of organization. There are 24 polypropylene bins, whch are designed to slide out easily and lock for safety and convenience. The unit comes with ten removable bin dividers to help separate smaller items. The rack has four 3-inch caster wheels that allow you to move it with ease. Two of the wheels lock for stationary use and safety. Whether you want to organize your basement, your tool shed, your garage or even your classroom, this set of shelves is the perfect solution. Bin labels are included for efficient organization and the bins slide out easily and tilt so you can access them anytime. What are the dimensions of the rack? The overall dimensions of the rack are 36"W x 14.25" D x 63.5"H. What size are the bins? Each unit comes with: 12 medium bins (each measures 5.5" x 14" x 5.5" H) 6 large bins (each measures 10.7" x 14" x 6.75" H) 6 extra-large bins (each measures 16.3" x 14" x 6.75" H)