Always measure the space that you have allotted for your back bar storage cabinet, as the sizes can vary by as little as 1/4 of an inch, from manufacturer to manufacturer. That 1/4 of an inch can make all the difference in the world when trying to fit something under a counter. You can choose between black and stainless exteriors, with solid or glass doors. You need to decide if you will be using your back bar storage for bottles and smaller items, or kegs. That will make it easier when it comes time to choose a size. They range from holding (2) 1/2 barrel kegs up to (5) 1/2 barrel kegs, or you can use the epoxy coated shelves that are provided to hold smaller items.