Re: [CBQ] Oval structures atop 1936 Denver and Twin Cities Zephyrs

["Charlie Vlk" <cvlk@comcast.net>]

At this point I am confused.   The structures above the screened openings (open 
on the DZ, shrouded trom the top and sides on the TCZ) are
not "oval" or "dish shaped"..... and don't seem to have changed from the DZ to 
the TCZ.   The rounded loaf shaped structures seem to have a slit opening on 
the bottom in both
cases and are a form of a normal vent that has a S-shaped ductway before the 
opening in the roof (coming from the outside in).  They don't seem to have any 
openings front or 
rear.
What vent are we talking about???
Charlie Vlk
 

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