KJV:

7 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.  

NASB:

7 The guardroom was one rod long and one rod wide; and there were five cubits between the guardrooms. And the threshold of the gate by the porch of the gate facing inward was one rod.