Unfortunately, Philips has not thought along. The edge of the lamp is very narrow, there remain no more than 2-3 mm clearance on each side for installation. In the case you would have the lamp but use already slanted, so the springs do not get in the way. If you want to use them straight, only a millimeter remains on each side. To me it is a mystery what Philips was thinking, because as accurately one can hardly work, after all, it is necessary to cut a large oval hole in often twice moved plasterboard ceiling. The edge of the lamp should be at least one centimeter wider to allow a clean installation. The look would not hurt. Under customer images there is a photo that the precarious space shows.