Abstract: The roof assembly includes guide rails extending parallel and at a distance from each other. The guide rails each include a guide groove being defined between an upper and lower flange of the guide rails. The guide grooves open in a direction towards each other, and further comprise at least one closure panel, in particular a sunshade panel, having two opposite sides substantially parallel to the guide rails and each including at least two laterally projecting tabs for engagement into the respective guide groove. At least one of said lower and upper flanges of each guide rail has at least one cut-out for allowing the tabs of the closure panel to enter the guide groove.

Abstract: An assembly is provided having two opposing parallel guides and a panel having two opposite parallel lateral edges cooperating with said guides for a frictional sliding movement of the panel relative to the guides. The edges of the panel are resiliently curved such that there are defined three contact points between each edge and corresponding guide. In one embodiment, two contact points are near the ends of each edge and there is an intermediate contact point. The assembly may be provided in an open roof assembly for a vehicle.