וְאֵת֙ פֶּ֣תַח הַדְּבִ֔יר עָשָׂ֖ה דַּלְת֣וֹת עֲצֵי־שָׁ֑מֶן הָאַ֥יִל מְזוּז֖וֹת חֲמִשִֽׁית׃
And for the entrance of the Sanctuary he made doors of olive-wood, the door-posts within the frame having five angles.
Read kabbalistic (mystical) interpretation of I Kings 6:31: and classical mystical sources.