Exodus 36:14-18

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.

He joined five curtains by themselves, and the other six curtains by themselves.

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.