Replacing Refrigerator, vents and wiring questions

Not sure if you have considered this, but there are 12 volt Danfoss Compressor fridges. They run on 12 volt and I believe 120 volt. They are the fridges that are put in boats and over-the-road trucks. They work just like a regular fridge, and you do not have the leveling problem that is a factor with the propane fridges. Also, they have a low power consumption. Worth a look...