A:AnswerFrom the installation manual:
1-Disconnect any cables
2- Unlock the TV from the wall plate by lifting the release latch on each of the two brackets (these are the brackets that are attached to the rear of the TV w/screws)
3- Lift the TV up and off the wall plate
This is very simple to do- best to have a helper for lifting if you have a large TV
A:AnswerSorry, but I can't reach behind the tv to measure because there is a heavily-loaded cabinet on the floor under it. Mine is an 85" TV and the mount is doing the job (invisibly) for which it was intended.