Love, Love, Love these indows! We are downtown facing a busy intersection with traffic, sirens, etc. The noise level is significantly reduced, making the acoustic inserts worth every penny. They were easy to install. The inconvenient part came with taking down the blinds and relocating them outward to accommodate the space for the indows. I knew to expect that in my conversations with sales prior to purchasing. My only complaint was by ordering 13, they were shipped together, and did not fit in our freight elevator. Seems the 450 pound order could have been separated to reduce weight and size. Had I known, I would made sure I had some helpers. Overall, there are no regrets. I would highly recommend these to anyone needing noise reduction! Great product!!