Black Cable Runway Elevation Kit, Cabinet Aplication. Supports cable runway above a continuous row of two and four post racks or cabinets of varying heights, and provides additional space between the tops of the racks or cabinets and the cable runway, which can create smoother cable transitions. Three ranges of incremental elevation Can be mounted perpendicular or parallel. Cabinet kits include two pairs of brackets and assembly hardware. Cabinet kits attach directly to the top of the cabinet.