Abstract: A closable passage arrangement interconnecting two spaces and comprising a closure unit having two passage openings each provided with a door or the like lockable with a locking bolt mechanism. Each door connects the closure unit to a different one of the two spaces. The doors are provided with driving means for their operation. The driving means comprises, for each door, a power transmission unit arranged to influence separately a mechanism for turning the door and a mechanism for operating the locking bolt mechanism of the door. The power transmission units of the doors are interconnected by means of a common shaft. The power transmission units include a pin-and-fork mechanism, wherein a rotatable power transmission member provided with crank pins or the like cooperates with a number of fork members. The driving means comprises a plurality of door operating stations each including a door operating member being directly or by means of the common shaft connected to the power transmission units.