Ezekiel 41:10, 12-15

And between it and the wall chambers was a width of twenty cubits all around the temple on every side.

The building that faced the separating courtyard at its western end was seventy cubits wide; the wall of the building was five cubits thick all around, and its length ninety cubits. So he measured the temple, one hundred cubits long; and the separating courtyard with the building and its walls was one hundred cubits long; also the width of the eastern face of the temple, including the separating courtyard, was one hundred cubits. He measured the length of the building behind it, facing the separating courtyard, with its galleries on the one side and on the other side, one hundred cubits, as well as the inner temple and the porches of the court