The cards can be stored with sleeves (each department can hold around 25 sleeved cards).
You can buy a custom box for each of the Malifaux Factions, the dividers are also labeled with the appropriate keywords
Material: MDF and Acrylic lid
Thickness: 2,5 mm
Size: 13,2 x 20 x 8,2 cm
Use: Stats cards box compatible with Malifaux