10 And he built the side rooms all along the temple. The height of each was five cubits, and they were attached to the temple by beams of cedar.

Read 1 Kings 6:10 Using Other Translations

And then he built chambers against all the house, five cubits high: and they rested on the house with timber of cedar.
He built the structure against the whole house, five cubits high, and it was joined to the house with timbers of cedar.
As already stated, he built a complex of rooms along the sides of the building, attached to the Temple walls by cedar timbers. Each story of the complex was 7 feet high.