Yechezkel 42:2-4

Orthodox Jewish Bible

² Before the length of a hundred cubits was the Petach HaTzafon, and the width was fifty cubits.

³ Opposite the twenty cubits of the khatzer hapenimah, and opposite the ritzpah which was for the khatzer hakhitzonah, was atik (balcony) against atik in three stories.

⁴ And before the leshakhot was a mahalach (walkway) ten cubits in width leading inward, a way of one cubit; and their doors toward the north.