The Wyr-Grid® Trapeze Bracket attaches to the 12 inch (304.8mm) wide Wyr-Grid® Pathway to support a secondary FiberRunner® 4x4 or 6x4 Channel above the Wyr-Grid® Pathway. It measures 12.2 inches H x 12.7 inches L (309.9mm x 321.6mm). It adjusts 6.6 inches (166.6mm) to 9.9 inches (251.0mm) over the top surface of the Wyr-Grid® pathway.