Equipped Box Car, Inside Length: 69' to 79', cushion draft gear/underframe, Plug 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".
DODX 29011 is seen in NS W4A at Harrisburg PA.