The way that this works is when the curtains are closed the panels will help to keep the cold air from coming in in the winter and the hot air from coming in in the summer. I hope this helps.

Unfortunately, this product is not machine washable. I hope this helps.

Unfortunately, the minimum size rod that this will work with is 2". I hope this helps.

This panel is dry clean only and the backing is attached and cannot be separated. I hope this helps.