The Temple Institute: In-Depth Temple Study: The Ark of the Covenant
The Ark of the Covenant: Dimensions

The Ark consisted of three boxes that fit one inside the other. A wooden box was placed inside a slightly larger box made of gold and inside the wooden box was an additional golden box. In this way the Ark was covered in gold "on the inside and on the outside." The outer larger box was a bit more than one handbreadth higher than the wooden box and the inner box was a bit smaller so that they could be inserted into one another. 

Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII