[JRTJH]

At any given time, there are tens of thousands, maybe hundreds of thousands of RV refrigerators in operation. I've only heard of a couple of "failures that resulted in a fire"... It's not a common occurrence and I'd suspect you're more likely to fall out of your RV and break a hip than to have it burn down from a "refrigerator fire"...

The reason there are Halon fire extinguishing systems on boats is because you can't "open a door and run"... In an RV, if it catches fire, you get out, stand there and watch your trailer... In a boat, you won't have that luxury....

I'd look more at "heat prevention" than at "fire prevention" with an RV refrigerator... ARP makes the Fridge Defend, but Norcold retrofitted most of their refrigerators to include a thermal overheat device which will disable the refrigerator in the event of a "chimney stack overheat condition"... I believe Dometic has followed that same path....