Solar Window Air Heater Panel Upgraded, FREE HEAT Save Money, MADE IN THE USA!

THIS SOLAR WINDOW HEATER WILL NOT OPERATE PROPERLY BEHIND A SCREEN, TINTED OR LOW E GLASS. The air path and surface area have been increased with increased heat output. This heater simply sits on your window sill / ledge of a south facing window (in the northern hemisphere) and collects the sunlight and converts the light into heat.