Ezekiel 41:3
Then he went into the inner sanctuary. He measured the side pillars at the entrance. They were 3 1/2 feet wide. The entrance was 10 1/2 feet wide. The walls on each side were about 12 feet wide.
Ezekiel 41:3, Readable English Bible (READ)
Note: Hebrew: two cubits; six cubits; seven cubits.