Ezekiel 41:5

Then he measured the wall of the temple, six cubits [thick, to accommodate side chambers]; and the width of every side chamber, four cubits, all around the temple on every side.

1 Kings 6:5-6

Against the wall of the house he built extensions around the walls of the house, around both the main room (Holy Place) and the Holy of Holies; and he made side chambers all around.

Ezekiel 41:6-9

The side chambers were three stories [high], one above another, and thirty chambers in each story; and the side chambers extended to the wall which stood on their inward side all around, so that they would be attached, but not attached to the wall of the temple itself.

Ezekiel 42:3-14

Opposite the twenty cubits which belonged to the inner courtyard, and opposite the pavement which belonged to the outer courtyard, was gallery (balcony) corresponding to gallery in three stories.

Treasury of Scripture Knowledge

Summary

After he measured the wall of the house, six cubits; and the breadth of every side chamber, four cubits, round about the house on every side.

Bible References

Side chamber

Ezekiel 41:6
The side chambers were three stories [high], one above another, and thirty chambers in each story; and the side chambers extended to the wall which stood on their inward side all around, so that they would be attached, but not attached to the wall of the temple itself.
Ezekiel 42:3
Opposite the twenty cubits which belonged to the inner courtyard, and opposite the pavement which belonged to the outer courtyard, was gallery (balcony) corresponding to gallery in three stories.
1 Kings 6:5
Against the wall of the house he built extensions around the walls of the house, around both the main room (Holy Place) and the Holy of Holies; and he made side chambers all around.