ותאו [וְתָאָ֗יו] שְׁלוֹשָׁ֤ה מִפּוֹ֙ וּשְׁלֹשָׁ֣ה מִפּ֔וֹ ואילו [וְאֵילָ֤יו] ואלמו [וְאֵֽלַמָּיו֙] הָיָ֔ה כְּמִדַּ֖ת הַשַּׁ֣עַר הָרִאשׁ֑וֹן חֲמִשִּׁ֤ים אַמָּה֙ אָרְכּ֔וֹ וְרֹ֕חַב חָמֵ֥שׁ וְעֶשְׂרִ֖ים בָּאַמָּֽה׃
And the cells 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.
Rashi on Ezekiel
And twenty five cubits its width from the roof of one cell to the roof of the other cell.