Ezekiel 40:9-11

9Then he measured the vestibule of the gateway, eight cubits; and the gateposts, two cubits. The vestibule of the gate was on the inside.

10In the eastern gateway were three gate chambers on one side and three on the other; the three were all the same size; also the gateposts were of the same size on this side and that side.

11He measured the width of the entrance to the gateway, ten cubits; and the length of the gate, thirteen cubits.