The VAIL-60S is a single-sided extrusion with a profile width of 60mm (2.4in.) This extrusion has a solid outside finish. VAIL-60S is best for standing independently since the profile width is just wide enough to provide ultimate stability. This extrusion works great overhead too because of the thick profile width really stands out. When installing the fabric graphic, the silicone beading can fit 12mm (.47in.) deep and 3mm (.11in.) wide into the silicone beading trough. Not compatible with lights (cannot be back-lit).