What is different with this norcold

Saw this on a 2011 Landmark Rushmore" for sale add."
Quite a different interior?
Take notice of the left side.
Anyone know what the tube and vent are for?

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Precooling the water for the ice maker


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Todster said:

Precooling the water for the ice maker


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Looking below the tube , next shelf looks like a vent?

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