Exodus 36:13-15

Young's Literal Translation

¹³ And he maketh fifty hooks of gold, and joineth the curtains one unto another by the hooks, and the tabernacle is one.

¹⁴ And he maketh curtains of goats' [hair] for a tent over the tabernacle; eleven curtains he hath made them;

¹⁵ the length of the one curtain [is] thirty by the cubit, and the breadth of the one curtain [is] four cubits; one measure [is] to the eleven curtains;