Abstract: An elongated channel member is provided including a first open longitudinal side outwardly of which said channel member opens and a second remote side defining a planar abutment surface disposed normal to the direction in which the first side of the channel member opens. The planar abutment surface has adhesive structure supported therefrom whereby the planar abutment surface may be abutted against and adhesively secured to a tub-shower stall wall extending upwardly from one end of the outer side wall of an associated tub and the open side of the channel member has one longitudinal edge portion of an upstanding panel member secured therein.