Exodus 27:10-12

and the pillars thereof shall be twenty, and their sockets twenty, of brass; the hooks of the pillars and their fillets shall be of silver. And likewise for the north side in length there shall be hangings a hundred cubits long, and the pillars thereof twenty, and their sockets twenty, of brass; the hooks of the pillars, and their fillets, of silver. And for the breadth of the court on the west side shall be hangings of fifty cubits; their pillars ten, and their sockets ten.