Exodus 38:9-12

Then he made the court: for the south side the curtains of the court were of fine twisted linen, a hundred cubits; their twenty support poles, and their twenty bronze sockets; the hooks of the support poles and their connecting rings were silver. And for the north side [of the court the curtains were also] a hundred cubits; their twenty support poles and their twenty bronze sockets; the hooks of the support poles and their connecting rings were silver. For the west side [of the court] there were curtains of fifty cubits with their ten support poles and their ten sockets; the hooks of the support poles and their connecting rings were silver.