The space also before the little chambers was one cubit on this side, and the space was one cubit on that side: and the little chambers were six cubits on this side, and six cubits on that side.
The space - rather, 'the boundary.'
Related Commentaries of Ezekiel 40:12
Ezekiel 40:12
12 The spacec also before the little chambers was one cubit on this side, and the space was one cubit on that side: and the little chambers were six cubits on this side, and six cubits on that side.