It is a custom made arm for is...we do not have a double arm.
We used to have this AWESOME double arm. It was a FULL MOTION arm like you buy at the store...you could go out a little, a lot and change the viewing angle top to bottom. We put it in a unit, messed around with it and thought "this is great", you can manipulate it into any position you want. Suddenly we got an influx of complains about broken TV's. Obviously (in hindsight) everyone was extending that thing as far as it would go while driving and the first time you hit the brakes...BANG, into the wall it went. When we looked at it, the vehicle wasn't moving so it worked great (D'oh). We now try to test everything running at 75mph just to be safe.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).