Heroes 3 The Boardgame Card Holder

The original BIG BOX insert for cards were inefficient, so i have created a modular one on my own. There are 2 different height for the big box basic and for expansion.

Original Big Box: Card holder. stl, its a basic insert that matches the original big box height.
Expansion Big Box:
-Card holder High, that's the basic insert for the box;
-Card holder low, You can use them on each other 2 makes the height of the basic;
-Card holder extra low, 3 of them makes a basic insert height;
-Car