1 Kings 6:6, 10

The rooms on the bottom floor were seven and one-half feet wide. Those on the middle floor were nine feet wide, and the rooms above them were ten and one-half feet wide. The Temple wall that formed the side of each room was thinner than the wall in the room below. These rooms were pushed against the Temple wall, but they did not have their main beams built into this wall.

as well as the bottom floor that was beside the Temple. This bottom floor was seven and one-half feet high and was attached to the Temple by cedar beams.