Rectangular Tube Hangrail Bracket for Pro Series Pipe Cothing Racks. This rectangular tube hangrail bracket measures 3" long and has a matte black finish which gives it a contemporary look. The Pro Series rectangular hangrail bracket is a great addition to the Pro Series Pipe Outrigger wall mount display system. Use with 1/2" x 1 1/2" rectangular tubing. Create your custom displays using outriggers, hangrail brackets and more today! This product is a part of our line of Pro Series Pipe Clothing Racks.