Solar powered Auto Fan/Vent is the only secure way to ventilate a parked car! Temperatures in a parked vehicle can soar past 120 degrees. But if you crack a window to vent it, you compromise on security. This solar powered fan installs in seconds in your vehicle's window to remove hot, stale air and humidity. Helps remove tobacco and pet odors too. And because it runs on the sun, there are no batteries to replace and no drain on your vehicle's battery. Weatherproof. This is a customer return. Customer returned items have a 7 day return policy.