Exodus 36:20

He made fifty loops on the edge of the curtain that was outermost in the coupling, and he made fifty loops on the edge of the curtain which was outermost in the second coupling.

He made fifty clasps of bronze to couple the tent together, that it might be a unit.

He made a covering for the tent of rams’ skins dyed red, and a covering of sea cow hides above.

Ten cubits was the length of a board, and a cubit and a half the width of each board.

Each board had two tenons, joined to one another. He made all the boards of the tabernacle this way.

He made the boards for the tabernacle, twenty boards for the south side southward.