Ezekiel 40:7

Each guardroom in the gate complex was a square one rod long and one rod wide (or six cubits by six cubits, 10 feet by 10 feet, Ezekiel 40:12). There were six guardrooms, three on each side of the hallway through the gate complex (Ezekiel 40:10). A wall five cubits thick separated the guardrooms on the same sides of the hallway from each other. Beyond these guardrooms there was another threshold that led to a large vestibule room. This threshold was the same size as the one at the other end of the passage, six cubits (10 feet) deep and 10 cubits (about 16 feet 8 inches) wide.