Define your case by adding the Logisys CLK12 12" Cold Cathode florescent light (CCFL) kit (White) with Single Tube to your case. Cold cathodes emit a neon looking glow, but they do so producing very little heat for the amount of light they give off, making them a standard choice by enthusiasts for lighting up computer cases. A dual inverter allows you to add an additional CCFL tube quickly and easily. A cold cathode florescent light kit will add flare to any case.