1 Kings 6:3

6:3 The porch in front of the main hall of the temple was 30 feet long, corresponding to the width of the temple. It was 15 feet wide, extending out from the front of the temple.

1 Kings 6:16

6:16 He built a wall 30 feet in from the rear of the temple as a partition for an inner sanctuary that would be the most holy place. He paneled the wall with cedar planks from the floor to the rafters.