The open space is for the under-counter refer. The picture does not do this product justice. I must say the epoxy top is a challenge. I'm not convinced it is the best way to go but it is a beautiful product. I'm still working on the best answer. The cabinets are a done deal with many possible options. They are no difference than a redwood deck with a quality deck finish.
Next step is the cabinet back & bar. It will attach to the cabinet backs and be 6" above the cabinet top with an 11" bar on top of it. A typical bar stool works perfectly.
Look for my next post
Jim
