Exodus 36:17-21

Moreover, he made fifty loops on the edge of the curtain that was outermost in the first set, and he made fifty loops on the edge of the curtain that was outermost in the second set.

He also made fifty clasps of bronze to join the tent together so that it would be a unit.

And he made a covering for the tent of rams’ skins dyed red, and a covering of fine leather above.

Then he made the boards for the tabernacle of acacia wood, standing upright.

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