This is actually our fourth unit. We use them in the garage and in a guest bedroom we converted into a utility/storage room.  The units are very sturdy, easy to assemble and have excellent fit and finish.  We have found it very practical to have our shelving units on wheels.  Greater flexibility and more efficient use of floor space.  They are easy to roll even when loaded. We use “S” hooks to facilitate hanging items off the ends. Great for odd shaped items, cords, etc.