I finished building my vertical solar air panel on the side of my garage. It is approximately 9 ft wide and 7 ft tall. I have a single muffin fan (110 cfm) exhausting air out of the panel into the garage. On a sunny day, air temps reach 110 degrees with around a 50 degree inlet temp. Used some salvaged glass I had laying around for 30 years! The fan turns on when the interior hits 65 degrees using a snap switch. Overall, I am pleased with the results and am hoping it keeps my electric resistor heaters from running much in the winter time. Currently, garage temps hover in the 60s with the outside temps ranging from the high 20s to 50s in the daytime.