Hangrails are used with many different wall systems, i.e., slatwall, outriggers, gridwall, and wall mounted brackets. The most popular hangrails are made from rectangular tubing but can also be constructed from square or round tubing.
The idea behind hangrails is to fit a high volume of "shoulder out" apparel. There are also "saddle" faceouts that can be used as well to display the front of a few garments.