Fridge/freezer?

I've got a Waeco which can be used as all freezer, or all fridge, by removing the bottom of the ice box. I'm guessing it will work as, if I set it to quick cool, when I get on board, and forget to set it back to normal after a few hours, the liquids are frozen the following morning.

I think it's only 50 litre, but I'm sure there will be bigger ones with the same facility.
 
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