A built-in fridge freezer combination has a cooling and a freezing compartment. A built-in fridge with a freezer always has 2 doors. You can place the fridge in the niche in your kitchen. That's why it's very important to accurately measure the niche dimensions to make sure the built-in fridge-freezer fits. Pay attention to the type of door hinge as well. It's best to choose the same door system as your old fridge. This is either a door-on-door system or a sliding door system. The fridge freezer combination has 2 doors, and it's important that you accurately measure the dimensions of these door panels. Otherwise, your freezer door will open when you're only trying to open the fridge, or vice versa.