Exodus 38:7-11

7Then he inserted the poles into the rings on the sides of the altar for carrying it. He made the altar with boards so that it was hollow.

8Next he made the bronze basin and its stand from the mirrors of the women who served at the entrance to the Tent of Meeting.

9Then he constructed the courtyard. The south side of the courtyard was a hundred cubits long1 and had curtains of finely spun linen, 10with twenty posts and twenty bronze bases, and with silver hooks and bands on the posts. 11The north side was also a hundred cubits long, with twenty posts and twenty bronze bases. The hooks and bands of the posts were silver.