Cardboard box for storage of about 1000 standard sized cards.
You can also store sleeved cards.
Those boxes were initially designed for Baseball- and Sportscards in generell. TCG players, collectors and sellers use those boxes for years and they have proven to be usefull in organzing big quantities of standard sized or smaller TCG cards.
The boxes are stackable, this way thousands of cards can be storaged in a relatively small space.
Dimensions: L 38 cm x W 10 cm x H 7,5 cm