The most popular of our systems thus far has been our Shadowline system. Designers prefer this system due to its subtle and upscale look. Featuring the smallest aluminum reveal we offer (3/16″), the narrow edges and joints leave a slight shadow between the panel and the extrusion. The Shadowline System also features four outside corner options, including a square profile and a radius profile. WPS has recently added a square stainless steel corner piece as an option for high-traffic areas.