Well almost........I am at the point on my layout where I am looking to see where things will go..... The Oblong Box Co (a kit from Brennan's Model Railroading, link below) is a building originally designed long ago. Freight cars were smaller. When I considered the opening, I figured that the 1st thing that had to go was roadbed.....and then I would see what cars actually fit........this is why I took a few sections of sidings down to the plywood.
1st, to make the trip is a Weaver Delta Lines Boxcar......I think Frank Ellison would be proud. Then, I tried other cars: traditional Lionel (New Haven, of course!), Atlas O, RailKing of different models and an MTH scale boxcar......Look at the results.
40' Traditional Lionel
40' MTH scale box car
40' MTH RailKing
50' MTH RailKing.......just makes it.......
36' Reefer by Atlas O
The link to the Brennan site:
http://www.brennansmodelrr.com/oblong-box.html
Have a great weekend, folks!
Peter