Exodus 26:25-29

And they shall be eight boards, and their sockets of silver, sixteen sockets; two sockets under one board, and two sockets under another board.

And thou shalt make bars of shittim wood; five for the boards of the 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 side of the tabernacle, for the two sides westward.

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

And thou shalt overlay the boards with gold, and make their rings of gold for places for the bars: and thou shalt overlay the bars with gold.