Exodus 36:24-28

And forty sockets of silver he made under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.

And for the other side of the tabernacle, which is toward the north corner, he made twenty boards,

And their forty sockets of silver; two sockets under one board, and two sockets under another board.

And for the sides of the tabernacle westward he made six boards.

And two boards made he for the corners of the tabernacle in the two sides.