Ezekiel 41:8-11

8I saw also that the house had a raised basement round about: the foundations of the side-chambers were a full reed of six great cubits. 9The thickness of the wall, which was for the side-chambers, on the outside, was five cubits: and that which was left was the place of the side-chambers that belonged to the house. 10And between the chambers was a breadth of twenty cubits round about the house on every side. 11And the doors of the side-chambers were toward the place that was left, one door toward the north, and another door toward the south: and the breadth of the place that was left was five cubits round about.