וְכֵ֨ן לִפְאַ֤ת צָפוֹן֙ בָּאֹ֔רֶךְ קְלָעִ֖ים מֵ֣אָה אֹ֑רֶךְ ועמדו [וְעַמּוּדָ֣יו] עֶשְׂרִ֗ים וְאַדְנֵיהֶ֤ם עֶשְׂרִים֙ נְחֹ֔שֶׁת וָוֵ֧י הָֽעַמֻּדִ֛ים וַחֲשֻׁקֵיהֶ֖ם כָּֽסֶף׃
And likewise for the north side in length there shall be hangings a hundred cubits long, and the pillars thereof twenty, and their sockets twenty, of brass; the hooks of the pillars and their fillets of silver.
Read kabbalistic (mystical) interpretation of Exodus 27:11: and classical mystical sources.