Solar air heater. Beer can heater.

grabcad

This is a solar air heater. I made it from the glass that I had lying around. It is easy to make for the glass you have. This one does not use a solar panel for the fan. wires to the fan is carried inside the air tube which lead the warm air into the building. I finished it. and it works perfectly. Have a picture where it is finished, however, missing paint. update: I found the pictures where it is painted. And when it is completely finished