13 Then he measured the gateway from the top of the rear wall of one alcove to the top of the opposite one; the distance was twenty-five cubitsa from one parapet opening to the opposite one.

Read Ezekiel 40:13 Using Other Translations

He measured then the gate from the roof of one little chamber to the roof of another: the breadth was five and twenty cubits, door against door.
Then he measured the gate from the ceiling of the one side room to the ceiling of the other, a breadth of twenty-five cubits; the openings faced each other.
Then he measured the entire width of the gateway, measuring the distance between the back walls of facing guard alcoves; this distance was 43 feet.