Good question. I think flange down. It holds the weatherstrip down to the door flange as well as on the vertical portion. If you have the seal, you should be able to tell which way it goes.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.