All good points, cost must be a factor also, those fm200 systems are far more expensive than this. That could be a good or a bad thing depending on how you interpret.
The product states it is: UL,ULC,FM,LPCB,SSL,VdS,CNPP,KPI, multiple global marine approvals
IMO... As far as a ample amount for the fridge space, I still think your within scope. It has many videos of putting out roaring gasoline fires under the hood of a vehicle in seconds. That space is far greater than what's behind an RV fridge...
Custom restorations and renovations
Keeping the Art on the road, one project at a time