In a message dated 9/8/1999 4:28:02 AM, tmarcini@MAIL.EXECPC.COM writes:

<< Is there a 90 degree flange on each panel butted against each other that is
spot welded then a seam sealer applied over it then paint?
 >>
Tim:
I think you are partly right.  While the panels are spot welded at the
flanges, I would think that the seam sealant is the weld-through variety.
The sealant would be applied to the flanges before the panels are mated.
Since I have one that needs a rear corner after being ass-ended by a
101-year-old gentleman (I am not inventing this!), I certainly hope someone
on the list writes that I am wrong.
Richard