Ezekiel 41:9-11

Young's Literal Translation

⁹ The breadth of the wall that [is] to the side-chamber at the outside [is] five cubits; and that which is left [is] the place of the side-chambers that [are] to the house.

¹⁰ And between the chambers [is] a breadth of twenty cubits round about the house, all round about.

¹¹ And the opening of the side-chamber [is] to the place left, one opening northward, and one opening southward, and the breadth of the place that is left [is] five cubits all round about.