Exodus 27:13-16

The breadth of the court on the front to the east shall be fifty cubits. The hangings for the one side of the gate shall be fifteen cubits, with their three pillars and three bases. On the other side the hangings shall be fifteen cubits, with their three pillars and three bases. For the gate of the court there shall be a screen twenty cubits long, of blue and purple and scarlet yarns and fine twined linen, embroidered with needlework. It shall have four pillars and with them four bases.