I was looking at some of my rolling stock and just realized some of the cars have the marking of a rectangle with “Plate C” printed on the sides. I also have one that says “plate E”. Can someone tell me what this means? How many different ones are there? Also what does “DF” mean on a box car?
Refers to the height of the car above the railhead:
Plate B - 15’1"
Plate C - 15’6"
Plate E - 15’9"
Plate F - 16’0"
Plate H - 20’2" (Double Stacks)
(source - April 2001 Offical Railway Equipment Register)
Quick and dirty - “Plate,” in this context, refers to the cross-sectional clearance diagram within which the car will fit - a shape roughly like the NMRA HO standards gauge. In addition to overall height, there are dimensions for side clearance at various heights.
“DF” is short for, “Damage-Free,” and refers to soft, long-travel coupler draft gear. A real DF car should have a long extension supporting the coupler on each end, which (on the prototype)moves about three times the standard distance forward and backward to absorb slack action.