The Temple Institute: In-Depth Temple Study: The Attic
 
The Attic: Dimensions

The attic was the second story of the Heichal, and its shape was identical to that of the Heichal below. In the attic there was a separation between the areas of the Kodesh and the Holy of Holies below.  

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