I have an old Hussmann refrigerator with two sliding glass doors, that was originally used as a refrigerated produce case in a grocery store (I use it to store eggs from my free-range egg farm). This was a nice unit in its day—it’s built like a battleship—but its refrigeration unit is shot, and was an inefficient dinosaur even when it ran properly.
These old refrigerators are good news/bad news. The good news is that their decrepit refrigeration units mean that you can buy them almost nothing. The bad news is that their decrepit refrigeration units mean that they’re worth almost nothing.