Ezekiel 40:7

7 The alcoves for the guards were one rod long and one rod wide, and the projecting walls between the alcoves were five cubitsa thick. And the threshold of the gate next to the portico facing the temple was one rod deep.

Read Ezekiel 40:7 Using Other Translations

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.
And the side rooms, one reed long and one reed broad; and the space between the side rooms, five cubits; and the threshold of the gate by the vestibule of the gate at the inner end, one reed.
There were guard alcoves on each side built into the gateway passage. Each of these alcoves was 10 feet square, with a distance between them of 8 feet along the passage wall. The gateway’s inner threshold, which led to the entry room at the inner end of the gateway passage, was 10 feet front to back.