Jezekiel 40:21

21 and the chambers, three on this side and three on that; and the posts, and the porches, and the palm-trees thereof: and they were according to the measures of the gate that looks eastward: the length thereof was fifty cubits, and the breadth thereof was twenty-five cubits.

Jezekiel 40:21 In-Context

19 And he measured the breadth of the court, from the open space of the outer gate inwards to the open space of the gate looking outwards: a hundred cubits of the gate looking eastward: and he brought me to the north;
20 and behold a gate looking northwards the outer court, and he measured it, both the length of it and the breadth;
21 and the chambers, three on this side and three on that; and the posts, and the porches, and the palm-trees thereof: and they were according to the measures of the gate that looks eastward: the length thereof was fifty cubits, and the breadth thereof was twenty-five cubits.
22 And its windows, and its porches, and its palm-trees, were according to the gate looking eastward; and they went up to it by seven steps; and the porches were within.
23 And a gate to the inner court looking toward the north gate, after the manner of the gate looking toward the east; and he measured the court from gate to gate, a hundred cubits.

The Brenton translation of the Septuagint is in the public domain.