Parallel
Genesis 6:16
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
A window shalt thou make to the ark, and in a cubit shalt thou finish it above; and the door of the ark shalt thou set in the side thereof; with lower, second, and third stories shalt thou make it.
You are to make a roof (note: Or skylight or window) for the ark, finish its walls a cubit from the top (note: A cubit is approximately 18 inches or 45.7 centimeters.), place a door in the side of the ark, and build lower, middle, and upper decks.