וּמָסַ֞ךְ שַׁ֤עַר הֶחָצֵר֙ מַעֲשֵׂ֣ה רֹקֵ֔ם תְּכֵ֧לֶת וְאַרְגָּמָ֛ן וְתוֹלַ֥עַת שָׁנִ֖י וְשֵׁ֣שׁ מָשְׁזָ֑ר וְעֶשְׂרִ֤ים אַמָּה֙ אֹ֔רֶךְ וְקוֹמָ֤ה בְרֹ֙חַב֙ חָמֵ֣שׁ אַמּ֔וֹת לְעֻמַּ֖ת קַלְעֵ֥י הֶחָצֵֽר׃
Le rideau portière du parvis, ouvragé en broderie, était d’azur, de pourpre, d’écarlate et de lin retors. Il avait vingt coudées de longueur; hauteur, formée par la largeur, cinq coudées, semblablement aux toiles du parvis.
Rashi on Exodus
לעמת קלעי החצר [AND THE SCREEN…] ANSWERING TO THE HANGINGS OF THE ENCLOSURE — i. e. according to the measure of the height of the hangings of the enclosure.
Siftei Chakhamim
Like the measurements of the curtains of the courtyard. The word לעומת is ordinarily used for something that is “across from.” Yet, the curtains were not across from [the screen], but at its sides. Thus Rashi explains: “Like the measurements.” I.e., the screen should be the same size [as the curtains].