I have a bedroom with 2 windows. One is a large 55" wide X 50" high window that faces out onto the front porch and street. I am placing my bed so that the head board is directly in front of the window. For a lot of reasons (e.g., privacy & noise abatement), it would be nice if I could find some semi-permanent (meaning it could be removed), rigid material that I could put over the entire window (fitting it just inside the window frame). --Any existing products? --Any Ideas? I,tentatively, thought of putting sheets of 3/4" rigid insulation (exterior building material); but there may be something better? I am sure that I am not the only person in the world facing this situation. I appreciate any help/suggestions. ---jaes.