Abstract: A sliding panel closure having three panels suspended from a header with three parallel tracks, has a sill disposed under the header with a sill channel opening downwardly and inwardly toward a bath enclosure or the like. A first of the door panels has a lower edge straddling the sill channel. The second and third of the panels have lower edges provided with guide means including outriggers slidable in the sill channel. A C-shaped guide positions the second panel relative to the sill, the outrigger being one of the legs of the C-shape. A E-shaped guide positions the second and third panels relative to one another and relative to the sill channel. The panels preferably have means along their vertical edges that allow the panels to lap but prevent adjacent panels from passing completely by one another.