This Set of models makes 5 chests which you could find in your local dungeon or building. Which is for the 25/28mm scale.
It is made from hard plastic and come in a unpainted / unassembled format.
Sizes
Base Size: 30mm by 15mm
Height (at highest point): 15mm
Number of Parts in kit: 10 (5x Lids and 5x Bottom)
Original .stl files of this model can be purchased from fatdragongames.com