GOD'S WORD® Translation
The rooms were in three stories. They didn't have pillars like the pillars in the courtyards. That is why the rooms on the third story were set farther back than those on the first and second stories.

American Standard Version
For they were in three stories, and they had not pillars as the pillars of the courts: therefore the uppermost was straitened more than the lowest and the middlemost from the ground.

Berean Study Bible
For they were arranged in three stories, and unlike the courts, they had no pillars. So the upper chambers were set back further than the lower and middle floors.

Douay-Rheims Bible
For they were of three stories, and had not pillars, as the pillars of the courts: therefore did they appear above out of the lower places, and out of the middle places, fifty cubits from the ground.

English Revised Version
For they were in three stories, and they had not pillars as the pillars of the courts: therefore the uppermost was straitened more than the lowest and the middlemost from the ground.

King James Bible
For they were in three stories, but had not pillars as the pillars of the courts: therefore the building was straitened more than the lowest and the middlemost from the ground.

World English Bible
For they were in three stories, and they didn't have pillars as the pillars of the courts: therefore [the uppermost] was straitened more than the lowest and the middle from the ground.

Young's Literal Translation
for they are threefold, and they have no pillars as the pillars of the court, therefore it hath been kept back -- more than the lower and than the middle one -- from the ground.

Ezekiel 42:6 Additional Translations ...