My home office overlooks a high school parking lot, so marching band practices, thumping car stereos, after-hours burnouts, and newly-licensed drivers honking their horns are a part of daily life. As part of a more comprehensive soundproofing strategy, another acoustic solutions company referred me to this product. The process of measuring and ordering was very easy, and I felt confident knowing that the process would yield a perfect fit. Indow did a great job communicating regarding delays related to the global supply chain, and it was worth the wait. The insert doesn't cancel out everything, but it's a significant improvement and I would 100% recommend the product.