I was looking for cheap filing cases because it seemed to me the prices in Schreibwarengechäft around the corner a little excessive. Here I am found it. The cases were delivered in a little too big Amazon carton in which a kleiener carton with the shells was indoors. This can be converted by means of perforation to a shell donor, relatively convenient
It should be noted would be: The white covers are not transparent, but milky white's have a rough surface, which does not bother me personally, however.