Grooved Door Window-Purpose?

Joined
Dec 5, 2003
Messages
3,747
Location
New England, USA
Just noticed this on the new vehicle. The door glass has a distinct groove in the edge, there is no corresponding ridge in the sealing area of the door channel, it is just a U groove lined with a flocked seal material.

Thoughts from the group? Maybe having 2 separate narrow sealing points is a better than one wider one? I had a '17 model of the same vehicle and it didn't have these grooves, but I don't remember any real difference in noise levels. Did a quick search and nothing popped up.

RRsw.jpg
 
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