Parallel
Ezekiel 41:21
Rahlfs Septuagint (1935) · Berean Standard Bible
καὶ τὸ ἅγιον καὶ ὁ ναὸς ἀναπτυσσόμενος τετράγωνα κατὰ πρόσωπον τῶν ἁγίων ὅρασις ὡς ὄψις
The outer sanctuary had a rectangular doorframe, and the doorframe of the sanctuary was similar.