וְרֹ֣חַב הַפֶּתַח֮ עֶ֣שֶׂר אַמּוֹת֒ וְכִתְפ֣וֹת הַפֶּ֔תַח חָמֵ֤שׁ אַמּוֹת֙ מִפּ֔וֹ וְחָמֵ֥שׁ אַמּ֖וֹת מִפּ֑וֹ וַיָּ֤מָד אָרְכּוֹ֙ אַרְבָּעִ֣ים אַמָּ֔ה וְרֹ֖חַב עֶשְׂרִ֥ים אַמָּֽה׃
Rashi on Ezekiel
and the sides of the entrance were five cubits for the Heichal was twenty cubits wide and the width of the entrance was ten. Its sides from here and there are found to be five cubits each.