The thermal pane window(s) at appear to have lost its / their thermal seal. Moisture, fogging, and hazing are common signs of this condition. While mostly cosmetic, this condition is generally not repairable. Correction would require replacement of the window(s) or window pane(s).
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How about " windows are not clear". It’s not that complicated.
J Michael…Is that the extent of the narrative you would write in your report?
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One and done… 
Hmmm. Doesn’t seem clear.
LOL!
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Looks like a failed hermetic seal. I would recommend replacement to the buyer.
I see what you did there… 