treeline - 11:05 am on Jun 23, 2013 (gmt 0)
My personal office has lead walls and ceiling - used to be an xray room.
The guy in the office next to me put one of these in his office (for his benefit). It has definitely helped. Any of us using that same carrier piggyback on it without even knowing it.
Sorry I don't know how it works or how they're set up.