This set of container walls is meant to create container yards in old 3D FPS games, such as DooM, but the textures are in a kinda unfamiliar format, the seams are placed to create walls according to T.E.U. sizes, rather than snapping on a 3D grid with interval of half meter-ish the seams are still multiples of 16 picas. 

Some cels represent an entire wall (20 feets) and some contain elements to represent the short sides, or to compose a different disposition on a long wall (like a container that has a windows on back side and a door on a long side, I.E.)