Exodus 36:29-33

They were double beneath, and together they were complete to its top, to the first ring; he did this with both of them for the two corners.

There were eight boards with their bases of silver, sixteen bases, two bases under every board.

Then he made bars of acacia wood, five for the boards of one side of the tabernacle,

and five bars for the boards of the other side of the tabernacle, and five bars for the boards of the tabernacle for the back side to the west.

And he made the middle bar to pass through in the center of the boards from end to end.