Disappointed. I bought 6 window inserts for my bedroom and living room that face a busy street. I don’t feel like they have made any difference, and possibly have made some sounds slightly louder than before. I’m not sure if having larger windows is why they don’t work as advertised, but after spending a lot of money on these I don’t think they were worth it at all. Also, if you have larger windows you will need two people to install them. I had to have my sister fly in for a visit to help me, which is annoying since they don’t even work. And on top of that I still have to figure out how to get rid of the large wood/cardboard packing materials they were delivered in.