Exodus 36:11-15

And he made loops of violet on the edge of the outermost curtain in the first set; he did likewise on the edge of the curtain that was outermost in the second set.

He made fifty loops in the one curtain, and he made fifty loops on the edge of the curtain that was in the second set; the loops were opposite each other.

He also made fifty clasps of gold, and joined the curtains to one another with the clasps, so that the tabernacle was a unit.

Then he made curtains of goats’ hair for a tent over the tabernacle; he made eleven curtains in all.

The length of each curtain was thirty cubits, and four cubits was the width of each curtain; the eleven curtains had the same measurements.