Ezekiel 41:9

Overview - Ezekiel 41
The measures, parts, chambers, and ornaments of the temple.
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Ezekiel 41:9  (King James Version)
The thickness of the wall, which was for the side chamber without, was five cubits: and that which was left was the place of the side chambers that were within.

was five

that which
This appears to have been a walk, or gallery of communication between the chambers, five cubits broad, into which the doors opened.
11 ; Ezekiel 42:1 Ezekiel 42:4