Exodus 36:15 in the King James Version
The length of one curtain was thirty cubits, and four cubits was the breadth of one curtain: the eleven curtains were of one size.
Context
14 He made curtains of goats’ hair for a covering over the tabernacle. He made them eleven curtains.
15 The length of each curtain was thirty cubits, and four cubits the width of each curtain. The eleven curtains had one measure.
16 He coupled five curtains by themselves, and six curtains by themselves.