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Attic temperatures. I have some data. I missed the guy's call sign who was talking about that. And let me just say in a nutshell what I did at the house here, I put Attic, and now ten days ago because it's the typical type of roof shingles as well. Roof shingles, Attic just gets hotter than the blazes and I have a thermometer up there but didn't have it in before after the fan. The fan comes on at about 80 Fahrenheit and we'll turn on sometime around noon on a sunny day and it will shut off around 9 or 9.30 at night when the temperature in the attic gets down below 80 again. And what a difference it makes in the upper floors of the house. Big, big difference, really big.