The ark was a large rectangular chest, or box, about 133 meters (437 ft) long, 22 meters (73 ft) wide, and 13 meters (44 ft) high.a The ark was made out of resinous wood, and it was covered with tar inside and out. It had three stories, or decks, and a number of compartments. There was a door in the side of the ark and evidently a window along the top. It seems likely that the ark had a roof that peaked in the middle with a slight pitch to allow water to run off.—Genesis 6:14-16.