GOD'S WORD® Translation
The rooms were arranged on three different stories. There were 30 rooms on each story. These rooms had supports all the way around the temple wall, but these supports were not fastened to the temple wall.

American Standard Version
And the side-chambers were in three stories, one over another, and thirty in order; and they entered into the wall which belonged to the house for the side-chambers round about, that they might have hold therein , and not have hold in the wall of the house.

Berean Study Bible
The side rooms were arranged one above another in three levels of thirty rooms each. There were ledges all around the wall of the temple to serve as supports for the side rooms, so that the supports would not be fastened into the wall of the temple itself.

Douay-Rheims Bible
And the side chambers one by another, were twice thirty-three: and they bore outwards, that they might enter in through the wall of the house in the sides round about, to hold in, and not to touch the wall of the temple.

English Revised Version
And the side-chambers were in three stories, one over another, and thirty in order; and they entered into the wall which belonged to the house for the side-chambers round about, that they might have hold therein, and not have hold in the wall of the house.

King James Bible
And the side chambers were three, one over another, and thirty in order; and they entered into the wall which was of the house for the side chambers round about, that they might have hold, but they had not hold in the wall of the house.

World English Bible
The side rooms were in three stories, one over another, and thirty in order; and they entered into the wall which belonged to the house for the side rooms all around, that they might have hold [therein], and not have hold in the wall of the house.

Young's Literal Translation
And the side-chambers are side-chamber by side-chamber, three and thirty times; and they are entering into the wall -- which the house hath for the side-chambers all round about -- to be taken hold of, and they are not taken hold of by the wall of the house.

Ezekiel 41:6 Additional Translations ...