Ezekiel 42:3-5

3Both in the section twenty cubits from the inner court and in the section opposite the pavement of the outer court, gallery faced gallery at the three levels.

4In front of the rooms was an inner passageway ten cubits wide and a hundred cubits long. Their doors were on the north.

5Now the upper rooms were narrower, for the galleries took more space from them than from the rooms on the lower and middle floors of the building.