When i received this countertop for our outdoor kitchen I thought it was going to be hollow aluminum that would just bolt on. I was pleasantly surprised to see a heavy duty top that was clad in aluminum, The screws bolt go right into the top and then the cabinet top slides right over the cabinet and locks into place. Is easily removable if you need to clean it or hose it off. After a few months this top is definitely shrugging off the outdoors weather and holdings its condition. Still would be a good idea to keep it covered when not in use for long periods of time for peace of mind.