Exodus 36:22 in the King James Version
One board had two tenons, equally distant one from another: thus did he make for all the boards of the tabernacle.
Context
21 Ten cubits was the length of a board, and a cubit and a half the width of each board.
22 Each board had two tenons, joined to one another. He made all the boards of the tabernacle this way.
23 He made the boards for the tabernacle, twenty boards for the south side southward.