Genesis 6:14-16

14 Make yourself an ark of gopher or cypress wood; make in it rooms (stalls, pens, coops, nests, cages, and compartments) and cover it inside and out with pitch (bitumen).

15 And this is the way you are to make it: the length of the ark shall be 300 cubits, its breadth 50 cubits, and its height 30 cubits [that is, 450 ft. x 75 ft. x 45 ft.].

16 You shall make a roof or [2]window [a place for light] for the ark and finish it to a cubit [at least 18 inches] above — and the [3]door of the ark you shall put in the side of it; and you shall make it with lower, second, and third stories.