Exodus 26:16 in the King James Version
Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.
Context
15 “You shall make the boards for the tabernacle of acacia wood, standing upright.
16 Ten cubits shall be the length of a board, and one and a half cubits the width of each board.
17 There shall be two tenons in each board, joined to one another: thus you shall make for all the boards of the tabernacle.