I made this cornice for a designer. It had to be a perfect fit, I think it turned out pretty good! The cornice fits flush against the wall without any returns. When the installer lifted the cornice up into the spot, it sat on the window frame, and was such a snug fit, he was able to leave it up there while he climbed down from his ladder to reach his drill. It's held up there by 2 screws hidden under the welt at the top.