Ezekiel 40:21

Its side rooms , three on either side , and its jambs and its vestibule were of the same size as those of the first gate . Its length was fifty cubits , and its breadth twenty-five cubits .

Its alcoves—three on each side—its projecting walls and its portico had the same measurements as those of the first gateway. It was fifty cubits long and twenty-five cubits wide.

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.