The central crossbar in the middle of the frames shall extend from one end to the other.

Exodus 26:27
five for those on the other side, and five for those on the rear side of the tabernacle, to the west.

Exodus 26:29
Overlay the frames with gold and make gold rings to hold the crossbars. Also overlay the crossbars with gold.

Exodus 36:33
He made the central crossbar to run through the center of the frames, from one end to the other.

And the middle bar in the middle of the boards shall reach from end to end.