These are great, and really give a room an expensive feel.  I like these so much better than an actual headboard because they’re in the wall, and don’t move around, rock, and creak like many headboards. They’re also especially great for platform beds (or any other type that doesn’t have headboard holesslots in the back).  
Also, once you screw the mounting brackets into the wall, you’ll still have a few inches of freedom when you attach the panels.  They slide up and down the tracks, so you’re not locked in to an installation that’s off by a few inches if you measureestimate wrong.  Most importantly, dog approved!!