Similar commercial trailers of different construction were collected under the designation Anhänger (1 achs.) für schweres Langmaterial (o) -trailer (1-axled) for heavy long material (commercial). The empty weight was specified as 800 kg and the load capacity with 2.200 kg. (Image from D 600)
To transport long materials, two identical trailers had to be coupled. Compared to the photo from D 600, the trailer on the lower photo had some differences. Such trailers were used by engineer and construction units.