Forum Discussion
the_armadillo
Aug 01, 2013Explorer
I can't say specifically for your WH, but most of the time, that foam is from the seals (like weatherstrip) at the joints in the duct work and at vents. There is also foam seals used at the blend door in most vehicles where the cooled, heated and fresh air is mixed. Common for these foam seals to disintegrate and leak over time.
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