Width of the wall opening needs to be >2" of TV width (W) - allows for 1" clearance on each side of TV. Height of the wall opening needs to be >7" of TV height (H) plus sound bar but not less than 42". Depth of the wall opening should be between 4" & 5". Can accomidate TV up to 2.5" in depth. Picture frame width & height should be >2" of hole size to have 1" of overlap around the opening. The Fireplace Mantle should be >6" below the wall opening and <10" depth.