Ezekiel 40:29

Its gate chambers, side pillars, and portico had the same measurements as the others. Both the gateway and its portico had windows all around; it was fifty cubits long and twenty-five cubits wide.

And the little chambers thereof, and the posts thereof, and the arches thereof, according to these measures: and there were windows in it and in the arches thereof round about: it was fifty cubits long, and five and twenty cubits broad.