Some friends wanted a Panel to mount a flat screen TV but were limited on wall space so they wanted the panel to go over a window, but wanted the panel to sit flush to the wall. Here is how I did it using some french cleats on a frame built inside the window frame.
First I cut some cleats
I mounted one side to the panel about 18” off the top and bottom with glue and screws. Once that dried I clamped the other side of the cleat to them and built a frame to match the window opening, put some recesses at the top of the panel to allow some air flow.
The frame was a little big at the top and had to trim off about 1/2”, but it went in snug. Screwed it in to the window frame sides, top and bottom. Sorry the pics came out dark from the window light.
Once the frame was in the panel just slipped in and sat in the cleats. The frame is very rigid and holds the panel tight against the wall. We mounted the TV bracket to the panel and drilled out a hole for cables and hung it back up and ran the cables behind the panel. Console pushes up against the panel and the cables run into the back of the console.
Took some thought but it turned out well.
-- Z, Rockwall, TX