Sun roof vent

A method of installing a portable auxiliary fan unit into a motor vehicle that has a roof with an opening which exposes a passenger compartment of the motor vehicle to the ambient, the motor vehicle further having a pair of channels adjacent to a pair of guide rails in the roof, comprising the steps of:

• a) providing a portable auxiliary fan unit that includes;
• a panel assembly adapted to be placed into the opening of the roof, said panel assembly having a passage that allows fluid communication between the passenger compartment and the ambient;
• a fan operatively connected to said panel assembly and in fluid communication with said passage;
• a pair of support bars attached to said panel assembly;
• at least one photo voltaic cell coupled to said fan;
• a pair of levers pivotally connected to said support bars and adapted to move between a retracted position and an extended position, said levers being aligned with the channels by said support bars;
• b) moving said fan unit until said support bars rest on the guide rails;
• and,
• c) rotating said levers into said extended positions so that said levers are inserted into the channels.