For Any Solar Fan To Perform Well It Will Need Power From Solar Panel. If The Solar Panel Is Low Wattage The Fan Motor Will Not Get Enough Power To Run The Fan. Amtrak Solar Provides 40 Watt High Quality Crystalline Solar Panel Unlike Competitors Which Offer Only 13 Watts Solar Panel. This Fan It Could Be Installed In The Gable Vent Or Anywhere In Attic. This Is A 12 Volt Dc Fan Configured To Work With Solar Panel. Fan Turns On As Soon As The Sunlight Hits The Solar Panel And Runs All Day. Keeps The House Cool And Ventilated With Fresh Air Circulation All Day. Does Not Require To Make Holes In The Roof To Install Solar Fan It Can Be Installed In Gable Vent. No Need Of Electricians No Permits No Inspections. Wiring Is Quick And Easy. Cubic Feet Per Minute On The Fan Is 1750. Solar Panel Generally Produce Power For Over 30 Years. Full Refund If The Product Is Defective. Fan Has High Efficiency Fan Blades For Best Performance Solar Panels Comes With 6 Mounting Brackets For Solar Panel. Instructions Are Included. 15' Feet Of Wire Included With Quick Connect Fitting. Built In The U.S.A