We got the opportunity to have some very bright direct sunlight and some pretty hot weather on Friday. I came home around 4:30. It was 80 degrees outside. We had some guests over for an hour. Al had all the blinds closed and the light coming through was beautiful. I thought he had the air conditioner on because it was so pleasant in the house. But, no, it was just how great the blinds were working. Thanks for working to get us great solutions for our doors and windows.