וַיֵּ֣לֶךְ הַמֶּ֣לֶךְ אָחָ֡ז לִ֠קְרַאת תִּגְלַ֨ת פִּלְאֶ֤סֶר מֶֽלֶךְ־אַשּׁוּר֙ דּוּמֶּ֔שֶׂק וַיַּ֥רְא אֶת־הַמִּזְבֵּ֖חַ אֲשֶׁ֣ר בְּדַמָּ֑שֶׂק וַיִּשְׁלַח֩ הַמֶּ֨לֶךְ אָחָ֜ז אֶל־אוּרִיָּ֣ה הַכֹּהֵ֗ן אֶת־דְּמ֧וּת הַמִּזְבֵּ֛חַ וְאֶת־תַּבְנִית֖וֹ לְכָֽל־מַעֲשֵֽׂהוּ׃
And king Ahaz went to Damascus to meet Tiglath-pileser king of Assyria, and saw the altar that was at Damascus; and king Ahaz sent to Urijah the priest the fashion of the altar, and the pattern of it, according to all the workmanship thereof.
Rashi
in Damascus And in I Kings (15:18) it is written, “Damesek,” and in another verse (II Kings 16: 10) it is written, “Dumesek.” It is all the same, an example being שׁוֹט, שֵׁבֶט, שַׁרְבִיט, whip, rod, scepter.