Expanding Info:
Sand Hopper
Plate C
Inside Length 37FT 1 9/16in
Three, Round, 30in Diameter
Length over Coupler Pulling Faces 41ft 10 1/2in
Inside Width 10FT 7 5/8in
Extreme Width 10FT 8in
Extreme Height 15FT 4in
Capacity, Cubic Feet 3281
Light Weight, lbs, est. 53,200
Maximum Gross Rail Load, lbs 286,000
Load Limit @ GRL 232,800
Commodity Cement/Sand
Attached are some sample pictures and a specification actual cars may vary, several builders.