Both the outer sanctuary and the inner sanctuary had double doors,

1 Kings 6:31
For the entrance to the inner sanctuary, Solomon constructed doors of olive wood with five-sided doorposts.

1 Kings 6:34
The two doors were made of cypress wood, and each had two folding panels.

Ezekiel 41:1
Then the man brought me into the outer sanctuary and measured the side pillars to be six cubits wide on each side.

Ezekiel 41:4
Then he measured the room adjacent to the inner sanctuary to be twenty cubits long and twenty cubits wide. And he said to me, "This is the Most Holy Place."

Ezekiel 47:1
Then the man brought me back to the entrance of the temple, and I saw water flowing from under the threshold of the temple toward the east (for the temple faced east). The water was coming down from under the south side of the temple, south of the altar.

And the temple and the sanctuary had two doors.