Exodus 27:15-17

Amplified Bible

¹⁵ On the other side [of the gate] the curtains shall be fifteen cubits with three pillars and three sockets. ¹⁶ For the gate of the court there shall be a screen [to provide a covering] of twenty cubits, of blue, purple, and scarlet fabric and finely woven [embroidered] linen, the work of an embroiderer, with four pillars and four [base] sockets. ¹⁷ All the pillars (support poles) around the court shall be joined together with silver rods; their hooks shall be of silver and their sockets of bronze.