Basically, there is nothing different between dorm refrigerators and regular mini Wine Bottle Fridges. These little appliances need to fit into your way-too-small dorm room. The smallest of these units is only about a foot tall, so you can easily put it on top of a shelf or even in the closet. You should get one that is a little bigger though, especially if there will be two people using it. A size of 3 cubic feet or larger should be enough room to hold your stuff, and it will only be a little bigger than the tiny ones.