Parallel
Ezekiel 41:6
Brenton's English Septuagint · Berean Standard Bible
And the sides were twice ninety, side against side; and [there was] a space in the wall of the house at the sides round about, that they should be for them that take hold of them to see, that they should not at all touch the walls of the house.
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.