Drifter--Janice from GDRV Customer Care got back to me a few weeks ago w/I just a day or two of me asking. There are not support studs behind the panel and after feeding an HDMI cable from the TV to the upper left cabinet for our DVD player, the panel seems to be about 3/8--1/2 thick. I am not certain if it is pine/other type plywood or some other type board. Janice said the aluminum bracket is secured by screws----not bolts with nuts that will drop off the back.
Let me know if other questions.
Dan