I am going to have a fairly extensive wallplate (two, actually) behind my AV Rack. There will be a total of 10 decora-style inserts containing various connections in two 5-gang "boxes".

Anyway, I've "put together" the inserts and I've found a 5-gang decora-style wallplate (although, I haven't purchased ityet), but I am having an extremely difficult time finding the wall box.

This is a retrofit/old work situation, so I need the ones that clamp down to the existing drywall (not the ones that hammer into the studs).

Because I want to avoid sharp turns on some of my cabling (HDMI in particular), I'd like it to be open back. I'm basically looking for a 5-gang version of this:

http://www.the-hdb-store.com/servlet/the-832/SC200RR-2-GANG-LOW/Detail

So, anyone have ANY idea where I can get these at ANY price?

Thanks!!

--Mav

P.S. I'm even open to a gangable/add-on solution that I can piece together to get to 5-gangs. I've just had zero luck finding what I need anywhere.