Top mount freezer refrigerators refer to the position of the actual freezer compartment. As you can see, the freezer is located on the top, with your refrigerator compartment down below. This refrigerator has the hinges located on the right hand side, just like the single door. Not to worry, the hinges can always be switched over to the left hand side.
Bottom mount refrigerators feature the freezer compartment on the bottom. Most of these have drawers that will slide out and give you multiple levels of shelving, providing easy access to those frozen items. Up top, you have the refrigerator compartment. What's nice about having the refrigerator compartment over the freezer compartment is that you go to the refrigerator 8 times more than you go to the freezer compartment. If you think about it, when you're going for that cold beverage or maybe that fresh piece of fruit for a snack, you're no longer bending down, going down into that refrigerator down low. It's all at eye level, making it easier for you to see exactly what you're storing in your refrigerator.