אֹ֜רֶךְ הַיְרִיעָ֣ה הָאַחַ֗ת שְׁלֹשִׁים֙ בָּֽאַמָּ֔ה וְאַרְבַּ֣ע אַמּ֔וֹת רֹ֖חַב הַיְרִיעָ֣ה הָאֶחָ֑ת מִדָּ֣ה אַחַ֔ת לְעַשְׁתֵּ֥י עֶשְׂרֵ֖ה יְרִיעֹֽת׃
The length of each curtain was thirty cubits, and four cubits the breadth of each curtain; the eleven curtains had one measure.
Read kabbalistic (mystical) interpretation of Exodus 36:15: and classical mystical sources.