In early August 2018, Athearn announced that it will re-release its 50 foot FMC 5347 Single Door box car ($24.98) in 7 new paint schemes (Railbox, Toledo, Peoria & Western, Green Mountain RR, CSX, Hartford & Slocomb, CAI (Saratoga & North Creek) and Union Pacific) with three road names each. Orders have been extended to August 24, 2018 with an estimated delivery of May 2019.
These Primed for Grime models (with faded base colors matched to prototypes) will feature some of the following: body-mounted McHenry knuckle couplers, newly tooled roller bearing trucks and machined metal wheels. For more information about this release, here is a link to the Athearn website.
Here is a link to other Athearn / MDC 50 foot FMC 5347 Single Door box car on TroveStar.