this was a perfect solution for my old windows that open in. I want to be able to open them but also have the option of having window treatments on them. love these!
iI purchased these over a year ago for a7 foot patio door. Two panels did the trick. They really do insulate well against heat and cold. Sitting next to them on a hot day and I could feel no heat transfer from the window outside temp was 109 inside temp was 78. If we have the windows open it can get dusty so I have washed them once. Thy held up well with no color transfere. I threw in a white towel just to check. These are an incrediable solution to cover a large window or door and a good value. I own 12 panels in various sizes for my common room windows.
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