Cable Ladder Center Support Kit Secures Your Data Center's Runway System to the Ceiling This SmartRack cable runway center support kit creates a single point of attachment from the ceiling of your server room or data center to a ladder section. All mounting and installation hardware is included, except for the threaded rod (because of variable ceiling heights) and appropriate fasteners to secure the durable steel wall bracket. The mounting surface must be able to support the combined equipment load safely. Be sure to use suitable mounting means when installing to cinder block, concrete, drywall or wooden studs. The SRLCNTRSPPT12 is designed for use with Tripp Lite's 12-inch (305-millimeter) SRCABLELADDER, SRL90BEND12 and other compatible straight and 90-degree ladder sections.