Mezuzah (Mezzuzah, Mezuza, Mezzuza, Mezuzot)
A mezuzah is mounted on the doorpost of Jewish home. Many Jews also place a Mezuzah on every doorway at home and in the office.
The Mezuzah is combined from a Mezuzah case and the parchment.
Designing and producing mezuzah cases has been elevated to an art form over the ages. Mezuzahs are produced from an endless variety of materials, from silver and precious metals, to wood, stone, glass, ceramics and pewter.
The mezuzah should be placed on the right side of the door (from the point of view of the person entering the room), in the upper third of the doorpost (i.e., approximately shoulder height), within approximately 3 inches of the doorway opening.
The procedure is to hold the Mezuzah against the spot upon which it will be affixed, then recite a blessing:
.בָּרוּךְ אַתָּה יי אֱלֹהֵינוּ מֶלֶךְ הָעוֹלָם, אֲשֶׁר קִדְּשַׁנוּ בְּמִצְוֹתָיו וְצִוָנוּ לִקְבּוֹעַ מְזוּזָה
Baruch atta Adonai Eloheinu melech ha‘olam, asher kideshanu bemitzvotav vetzivanu likboa‘ mezuza.