Yes, I've read about it somewhere in the forum.
But watch out. If you try to take items from that box at marchant's presence it will be concidered as thevery and you marchant's attitude will drop.
And btw I found a bug there. If you put some openable box in the inventory, open it, then open chest with some items and transfer items directly from window to window weight of those items won't be added to total weight of container. So teoretically you can carry tons of equipment. But there is one dissadvantage. When first item from that box go to inventory somehow game notice what's going on and whole box has proper weight again.
