Exodus 26:16

American King James Version (1999)

Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.

See the chapter Copy

And you shall make boards for the tabernacle of shittim wood standing up.

Two tenons shall there be in one board, set in order one against another: thus shall you make for all the boards of the tabernacle.