Its dimensions are 10.47 m east-west by 5.234 m north-south. The ceiling is 5.85 m high and consists of nine stone slabs with a total weight of 400 tons.
The room contains only the sarcophagus, which, in contrast to the neatly finished walls of the chamber, is made carelessly. It is suspected that the original sarcophagus sank during transport from Aswan and another had to be made in a hurry. The sarcophagus must have been placed in the chamber before its completion because it is higher than the passage leading to it.