This is the Roundhouse HO Scale 50ft FMC 5283 Double Door Box Car, SSW #67599.

MODEL FEATURES:
Positionable sliding double doors
Body-mounted McHenry® operating scale knuckle couplers
Weighted for optimum performance
Highly-detailed, injection-molded body
Separately applied brake wheel
Machined wheels with RP25 contours operate on all popular brands of track
Fully-assembled and ready to run
Painted and printed for realistic decoration
Minimum radius: 18”