Thanks islandmon, but the parts are 3d details. The 4" ext trim should be applied to the wall frame and the brick should return to the edge of the trim. When I do that in plan, I can see the trim against the frame, but the rendered view has no trim. I have to use the full wall depth to render the trim, but then the trim is on the face of the brick, with no brick return. Also, when I make the window a symbol and try to edit, I can't edit the 3d parts because I get the same setup dialog as when I inserted with the window tool.-Bryn