Exodus 26:15-26

“Then you shall make the boards for the tabernacle of acacia wood, standing upright [as a trellis-like frame]. The length of each board shall be ten cubits and the width of each board shall be one and a half cubits. Make two dovetails in each board for fitting [them] together; you shall do the same for all the tabernacle boards. You shall make the boards for the tabernacle [in the following quantities]: twenty boards for the south side. You shall make forty silver sockets under the twenty boards, two sockets under each board for its two dovetails, and two sockets under another board for its two dovetails; for the north side of the tabernacle there shall be twenty boards, and their forty silver sockets, two sockets under each board. For the back or west side of the tabernacle you shall make six boards. Make two boards for the corners of the tabernacle at the rear [on both sides]. They shall be joined together underneath, and joined together on top with one ring. So shall it be for both of them; they shall form the two [rear] corners. There shall be eight boards and sixteen silver sockets; two sockets under each board. “Then you shall make [fifteen] bars of acacia wood: five for the boards of one side of the tabernacle