Exodus 36:16

14He made curtains of goats’ hair for a covering over the tabernacle. He made them eleven curtains.

15The length of each curtain was thirty cubits, and four cubits the width of each curtain. The eleven curtains had one measure.

16He coupled five curtains by themselves, and six curtains by themselves.

17He 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.

18He made fifty clasps of bronze to couple the tent together, that it might be a unit.