12. I'm reading average head is about 6" in diameter
Someone could squish their body through but the head is the hard part.
The first guy seems short enough, but the 6 ft tall guy was lucky.
Banks is described as a black man, 5 feet 8 inches, weighing 160 pounds. Conley is described as white, 6 feet tall, weighing 185 pounds.
The men apparently descended from a thin window on the flat south side of the prison into the alley below. The specially designed cell windows are barely a half-foot wide.