it was
Ezekiel 40:21
And the little chambers thereof were three on this side and three on that side; and the posts thereof and the arches thereof were after the measure of the first gate: the length thereof was fifty cubits, and the breadth five and twenty cubits.
Ezekiel 40:25
And there were windows in it and in the arches thereof round about, like those windows: the length was fifty cubits, and the breadth five and twenty cubits.
Ezekiel 40:36
The little chambers thereof, the posts thereof, and the arches thereof, and the windows to it round about: the length was fifty cubits, and the breadth five and twenty cubits.