The Schlittenkufen für geschlossenen Aufbau - sledge skids for closed box body - was used to move the LC- Koffer of the Luftwaffe on snowy ground. The Schlittenkufen had a dead weight of 140 kg and a loading capacity of 1,500 kg.
It seems that a special LC-Kofferaufbau was developed for these Schlittenkufen, later. Anyway, the illustrated box body does not match any of the known LC-Koffer (Kfz. 305, A2, B2).