1 Kings 6:5-6

5And against the wall of the house he built chambers all around, against the walls of the house all around, both of the temple and of the inner sanctuary: and he made chambers all around:123

6The lowest chamber was five cubits broad, and the middle was six cubits broad, and the third was seven cubits broad: for around the outside in the wall of the house he made narrowed rests, that the beams should not be fastened in the walls of the house.4