Exodus 36:31-34

31— And he made bars of acacia-wood: five for the boards of the one side of the tabernacle,

32and five bars for the boards of the other side of the tabernacle, and five bars for the boards of the tabernacle at the rear, westward.

33And he made the middle bar in the midst of the boards reach from one end to the other.

34And he overlaid the boards with gold; and made their rings of gold [as] receptacles for the bars; and overlaid the bars with gold.