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“ A crisper drawer, sometimes called a humidity drawer, is a bin in your fridge that helps preserve freshness and may prolong the lifespan of your fruits and vegetables by exposing them to different levels of humidity.”
That’s from Whirlpool, a NA manufacturer, the rest say the same. Might be slightly cooler as it’s always on the bottom of the fridge, but the main selling point is higher humidity.
I think the notion here is just that colder = better 💁🏼