John Gill Commentary Ezekiel 40:10

"And the lodges of the gate eastward were three on this side, and three on that side; they three were of one measure: and the posts had one measure on this side and on that side." — Ezekiel 40:10 (ASV)

And the little chambers of the gate eastward
Where the man now was, and was measuring; and the like chambers there were in the other gates, and of the same measure; of which chambers (See Gill on Ezekiel 40:7): were three on this side, and three on that side ;
three on the right side of the porch to the north, and three on the left side of it to the south: they three were of one measure ;
one reed, or three yards and a half square, as in (Ezekiel 40:7) and the posts had one measure on this side and on that side ;
on the right and left, north and south of the inward gate of the porch, which measure was two cubits, (Ezekiel 40:9) .