This model is a pair of kits to make 2mm:1ft scale British Railways AFP containers. These were slightly longer than the A-type containers, and they were loaded singly or more usually in pairs on Conflat-B wagons, rather than Conflat-A. The model was done in this kit style when it used to matter (on Shapeways) which way up a models' surfaces were 3D printed and I have been too lazy to change it, so you'll have to cut the bits apart and glue them together yourself.