- AAR Mechanical Designation: XM
- Construction: Steel
- Interior Dimensions
- Length: 50′ 6″
- Width: 9′ 6″
- Height: 11′ 2″
- Door Width: 10′
- Capacity: 70 tons
- Plate: C
- Description: General purpose, single sheath boxcars
- Total cars delivered: 200
- Original Lease Date: 22 February 1977.
- First Car Arrived on Property:
- ICC Lease Recordation Number: 8799-H
- Notes:
- Original lease documents show 200 cars to be leased in this number series. ICC lease 8799-K, dated 28 March 1979 shows 35 cars in this number series- PHD 3000 – PHD 3034.
- ICC Lease Recordation #8799-M notes 165 cars, PHD 3035 – PHD 3199 were not delivered to the PH&D by the lessor (SSI, then ITEL).
- ICC Lease Recordation #8799-N, or Amendment H to the original lease from February 1977, shows the 35 cars in this series that were delivered would be converted from XM to XP, at the lessor’s (ITEL) expense. This amendment is dated 28 October 1982. Equipment Schedule No. 3.B. shows the 165 cars that were not delivered as retaining the XM designation.