The main advantage of wall shelves is that they free the floor space on your garage. Conventional storage systems like cabinets and shelves that are placed on the floor take up some of the already-limited space in the garage. Instead of using this space for other important items especially bulky and heavy equipment, the space is taken up by the floor storage cabinet. Putting the shelves on the wall or even suspended from the ceiling can utilize these spaces that are not often used and, thus, free the space on the floor of the garage.