Each gate chamber was one rod long and one rod wide, and there were five cubits between the gate chambers. The inner threshold of the gate by the portico facing inward was one rod deep.
KJV
And [every] little chamber [was] one reed long, and one reed broad; and between the little chambers [were] five cubits; and the threshold of the gate by the porch of the gate within [was] one reed.
ASV
And every lodge was one reed long, and one reed broad; and the space between the lodges was five cubits; and the threshold of the gate by the porch of the gate toward the house was one reed.