Heart of the Onion, Barry Goldstein
Mezuzah Instructions
The Mezuzah should be placed inside a protective case. The scroll should be rolled from left to right, so that Gā€‘d’s name, “Sha-dai,” is facing the front. It is then placed right-side-up inside the case, with the Sha-dai in front.
 
Which Rooms Require a Mezuzah?
A common misconception is that only the main entrance to the home requires a mezuzah. It is better to have one mezuzah on the front door than no mezuzahs, and if you have only one mezuzah, it should be placed on the home's main entrance. However, to properly fulfill the mitzvah, every room in the house or office should have its own mezuzah.
 
A doorway that requires a mezuzah is only one that that has two doorposts and a horizontal support connecting the doorposts on top.  
 
Do not affix a Mezuzah on bathrooms, shower rooms or the like.
 
Where?
The Mezuzah is affixed on the right-hand side of the door as you enter the room. It should be placed at a slight angle, with the top of the Mezuzah pointing toward the inside of the room and the bottom pointing toward the outside.
 
The proper place for the Mezuzah is at the bottom of the top third of the doorway. In other words, measure the height of the doorway and divide by three; then align the bottom of the Mezuzah with the point two-thirds of the way up the doorpost (see illustration). In most homes, the doorways are approximately 78 inches high, so the bottom of your Mezuzah should be no lower than 52 inches from the floor.
If your doorway is much higher (say 90 inches or higher), affix the Mezuzah at shoulder height, even if this is lower than the upper third of the doorway.
 
The Right Side
There can be confusion as to which is the “right side” of the doorway. Is it the right as you enter a room or as you exit? And what about a doorway that is between two rooms (e.g., a doorway between a kitchen and dining room)?
 
The basic rules are:
  • For the door at the entrance of the house, the right as you enter is always considered to be the right side.
  • Inside the house, if the doorway can be used as an entrance from either side, the right side is determined by how the door opens. Whichever room the door opens into is considered the primary room, and the Mezuzah is placed on the side that is on the right when entering that room.
 
How?
The Mezuzah should be permanently affixed to the doorpost. To do this, it is best to use nails or screws, but if necessary, you may also use glue or double-sided mounting tape. Regular scotch tape or masking tape, which are temporary adhesives, should not be used.
 
Who?
It is best for the homeowner to affix the Mezuzah and say the blessings. If that is not possible, any Jew, who understands the details, may affix the Mezuzah on the homeowner’s behalf.
 
When?
The Mezuzah can be put up at any time of day or night, other than Shabbat or major Jewish holidays when work is prohibited (See the Jewish Holiday Listing).
 
The Blessing
When putting up Mezuzahs for more than one doorway in a house, only say the blessing once. When reciting the blessing, keep in mind the other doorways and the blessing will include all those Mezuzahs. We refrain from talking, or other interruptions, until all the Mezuzahs are mounted.
 
Prior to affixing the first Mezuzah, the following should be recited:
 
Baruch Ata A-do-nai Elo-heinu Melech Haolam asher kideshanu bemitzvotav vetzivanu likboa mezuza.
 
Translation:
 
Blessed are You, Lā€‘rd our Gā€‘d, King of the universe, who has sanctified us with His commandments and commanded us to affix a Mezuzah.
 
 
Links
http://www.chabad.org/library/article_cdo/aid/278476/jewish/Mezuzah.htm
 
http://www.chabad.org/library/article_cdo/aid/278460/jewish/How-to-Affix-a-Mezuzah.htm
 
 
Rabbi
For more specific direction, please consult a rabbi in order to determine the proper placement of Mezuzahs.
 
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