Exodus 38:13-15

Young's Literal Translation

¹³ and at the east side eastward fifty cubits.

¹⁴ The hangings on the side [are] fifteen cubits, their pillars three, and their sockets three,

¹⁵ and at the second side at the gate of the court, on this and on that, [are] hangings, fifteen cubits, their pillars three, and their sockets three;