This is a fridge fan that actually does some good in these Norcold absorption fridges. It attaches to the top of the fridge, recircs air through the fins, and down the back of the fridge. Picks up power from behind the fridge by running a wire down the drain tube. It moves a lot of air, keeps the fins from frosting up, and restores the temperature of the fridge quickly after you've been rooting around in it getting stuff out for dinner. I've tried a lot of different methods of moving air in the fridge and this is hands down the best one. Downsides are that it's very expensive ($125) and is just a bit noisy. I'm sitting directly across from the fridge right now and can hear it. Not loud, mind you, but I can hear it. As for the price, I guess that's what you get when you buy something that's assembled in the USA.
Be aware that these fridges shut off every two days to melt the frost off the fins. Using this device, you don't need to warm the fridge up to melt the frost. Personally I turn the fridge off every day for just a few seconds to keep it from auto defrosting. In auto defrost mode it stays off long enough to really warm up the fridge and can take a looooong time to cool back down once it's warmed up.