The six heatpipes travel up out of the base and around the circumference of the fins, with the outermost pipe routed through the copper section and the inside two pipes traversing the inner aluminum fins. As the heatpipes begin and end in the base it could be said there are really only three pipes, but each capable of bidirectional heat dispersal. The control knob is conveniently mounted in a space between the fins on the opposite end of the cooler.