I found this post that sheds some light on using 47-50 window interior garnish moulding on a 51-54:
Originally Posted by LonnieC
Note on the interior window trim: Although they look similar, the stainless trim I bought from a 47-50 (no vent windows) is completely different from my '54 trim. See photo. Non-vent interior trim on left is a little "thinner" than 3/4" at the bottom and a little "thicker" than 3/4" at the top. Interior trim for vent window doors is a little thinner than 1" at the bottom and a little thicker than 1" at the top. Of course there is a cut out for the vent on the bottom of the '54 trim and a screw hole on the bottom of the '54 trim vs no hole on the non-vent trim. There is also a weld visible on the inside of the bottom of the '54 trim near the vent.
The original post had a link to the photo that I attached.
Last edited by Phak1; 10/27/20241:14 PM. Reason: Added photo
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