The VAIL-40D is a double-sided extrusion with a profile width of 40mm (1.6in). The alternative extrusion in style to the ASPEN-40D, the VAIL-40D has a solid outside finish. It is especially great for wall mounting and hanging overhead because it is lightweight, but can be used with feet to stand independently as it is more stable than the VAIL-40S. When installing the fabric graphic, the silicone beading trough. Not compatible with lights (cannot be back-lit.)