וּשְׁתַּ֧יִם דְּלָת֛וֹת לַֽהֵיכָ֖ל וְלַקֹּֽדֶשׁ׃
Le Hêkhal et le Saint [des Saints] avaient deux portes.
Rashi on Ezekiel
And...two doors to each entrance, closing one opposite the other, one on the northern doorpost and one on the southern doorpost.