Exodus 27:15

and curtains fifteen cubits long are to be on the other side, with three posts and three bases.

(New International Version)

'And for the other side shall be hangings of fifteen cubits with their three pillars and their three sockets.

(New American Standard Bible)

And on the other side shall be hangings fifteen cubits: their pillars three, and their sockets three.

(King James Version)