Exodus 27:10-12

it shall have twenty pillars and twenty bronze sockets; but the hooks of the pillars and their fasteners shall be silver; likewise for the north side there shall be curtains, a hundred cubits long, and its twenty pillars and twenty bronze sockets; but the hooks of the pillars and their fasteners shall be silver. For the width of the court on the west side there shall be curtains of fifty cubits, with ten pillars (support poles) and ten sockets.