Overview Tripp Lite's SmartRack SRLADDERATTACH allows an overhead cable ladder (SRCABLELADDER) to be attached to our 2 post rack (SR2POST), 4 post rack (SR4POST) and terminate on the wall. SRLADDERATTACH includes all hardware needed to create two connections (the ladder to one rack and the wall or from one rack to another). When connecting to the 2 post or 4 post racks they can be attached either parallel with the rack structure or perpendicular to the rack structure.