Multi-Purpose Aluminum Rack Fan Kit w/ Speed Controller 12/24 Volt 2 x 140mm Durable aluminum rack: Install the fan vertically or horizontally Aluminum Speed Controller: Installs Anywhere with supplied mounting pads Automatic or Manual Speed control: High Quality Temp sensor Silent Kukri Fan: 6 ft. Cable High CFM, Low Noise 12V and 24V input voltage can be applied to ordinary vehicles, large-size vehicles and yachts.