|Crystal. 12 volts. Has an elegant internal frame & installation using sandwich system, installs into 400 x 400mm openings & a roof depth of up to 85mm. With thermostat included Polar control the Turbo-Vent is a ventilation system made from high quality materials that are impact & UV-ray resistant. It changes & refreshes the air inside the vehicle in a matter of seconds thanks to the 12V DV variable speed motor with 10 blades, all functions can be set in motion by a simple finger-touch. Renewed electronic interface with signal LEDs. The Premium version of Fiamma Turbo-Vent has been given a modern design with advanced finger-touch controls; the state of the art interface is completed by brand new multi colour LED lights. Speed setting & switching now have acceleration ease which helps saving the Turbo-Vent motor & the vehicle control unit.