Genesis 6:15
And this is the fashion which you shall make it of: The length of the ark shall be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits.
Topicalbible.org—AKJV

Genesis 6:19-20
And of every living thing of all flesh, two of every sort shall you bring into the ark, to keep them alive with you; they shall be male and female.
Topicalbible.org—AKJV