It is not clear why they put the vent there in the first place. They removed the upper vent that a propane fridge would have, but left the bottom one. Other manufacturers (at least some) don't have a vent behind the 12V models at all.
Reports are that some units have nothing on the inside. Mine has a piece of lauan board; others have stuffed insulation in to stop drafts.
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2022 Jay Feather Micro 166FBS
2019 F150 SuperCrew Short Bed 2.7L
Andersen WDH, 1000 lb Sumo Springs
Past: 2015 Winnebago View, 2004 Blue Bird M380, 1990 Blue Bird WB40, 2003 Safari Zanzibar, 1998 Safari Sahara
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