Exodus 36:14-18

Then the workers made another tent of eleven curtains made of goat hair, to put over the Holy Tent. All eleven curtains were the same size—forty-five feet long and six feet wide. The workers sewed five curtains together into one set and six together into another set. They made fifty loops along the edge of the outside curtain of one set and fifty loops along the edge of the outside curtain of the other set. Then they made fifty bronze rings to join the two sets of cloth together and make the tent one piece.