Just plain old regular George,

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Is there some sort of mark at the center of the box? How do you get that exactly right?

Most times yes, you have to remember I almost never see plastic nail on boxes.

Here is the most common box and bracket we use.

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The bracket has a > notch right on center.

Here is another way we mount.

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In this case the bar gets mounted 18" AFF to center and the boxes get screwed to the bar.

Here I used the bar as the specifications gave a finish measurement of 2" between the voice / data plate and the receptacle plate.

[This message has been edited by iwire (edited 09-05-2005).]

Bob Badger
Construction & Maintenance Electrician
Massachusetts