Genesis 6:14-16

14Make thyself an ark of gopher wood: [with] cells shalt thou make the ark; and pitch it inside and outside with pitch.

15And thus shalt thou make it: let the length of the ark be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.

16A light shalt thou make to the ark; and to a cubit high shalt thou finish it above. And the door of the ark shalt thou set in its side: [with] a lower, second, and third [story] shalt thou make it.