Modern solar light tubes come in a variety of style and arrangements but they all do basically the same thing. The redirect sunlight from the roof to inside your house to where you need it , saving you electricity. Some of them have dampers than dim and shutoff if you want full featured units. The end result is that during the daylight hours you can light the dark areas of your house for free.
Check the video. How to , start to finish.
ST Staff Writers
This post was prepared by Solar Thermal Magazine staff.