Yechezkel 41:9

9 The thickness of the wall, which was for the tzela toward the outside, was five cubits; and that which was open was the space at the end of the tzela’ot of the Beis [HaMikdash].

Yechezkel 41:9 Meaning and Commentary

Ezekiel 41:9

The thickness of the wall, which was for the side chambers
without, was five cubits
This is the outward wall of the chambers, north and south, which was five cubits thick, made of stone; (See Gill on Ezekiel 41:5), and that which was left was the place of the side chambers that were
within;
this was a void space, not built upon, which was before the chambers that stood within it; and was a space to walk in for those that dwelt in the chambers, or to go in from chamber to chamber; which also was five cubits in breadth, as appears from the next verse. This may denote the communion of churches, and the members of them one with another.

Yechezkel 41:9 In-Context

7 And tzela’ot (side chambers, cells) were broader at each story; a ramp spiraled upward by stages around the Beis [HaMikdash]; therefore the width of the Beis increased as it went upward, so from the lowest to the highest through the middle.

8 I saw also the height of the Beis [HaMikdash] all around; the yesodot (foundations) of the tzela’ot were a full rod of six cubits long.

9 The thickness of the wall, which was for the tzela toward the outside, was five cubits; and that which was open was the space at the end of the tzela’ot of the Beis [HaMikdash].

10 And between the leshakhot was the space the width of twenty cubits around the Beis [HaMikdash] all around.

11 And the petach of the tzela were toward the space that was open, one petach toward the north, and another petach toward the south; and the width of the place that was open was five cubits all around.