Equipped Box Car, Inside Length: 49' to 59', Sliding door, opening greater than 11 feet
Boxcar similar in design to "XM", but which is specially equipped, designed, and/or structurally suitable for a specific commodity loading; except, boxcars (XF, XM, XMI) dedicated to the transportation of commodities in paragraph A, Rule 97, AAR Interchange Rules, must be designated "XP".
The other side of the NAR car..... I went to Sand Patch 3 days later and saw these cars on a westbound train... I just smiled and laughed.
Don't see too many of these on the MMID..... The other side was in better condition than this.