Ezekiel 41:12

Overview - Ezekiel 41
The measures, parts, chambers, and ornaments of the temple.
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Ezekiel 41:12  (King James Version)
Now the building that was before the separate place at the end toward the west was seventy cubits broad; and the wall of the building was five cubits thick round about, and the length thereof ninety cubits.

13-15 ; Ezekiel 42:1 Ezekiel 42:10 Ezekiel 42:13 Revelation 21:27 ; Revelation 22:14 Revelation 22:15

the wall
This appears to have been a building erected at the west end of the temple.