Unfortunately I am extremely disappointed in the product and the service through the shipping process and would not recommend this product. I originally ordered this product through thorough research of competitors based on noise reduction in my bedroom. I live across the street from a train and on a moderately busy street. My goal was to reduce the train's horn noise throughout the day and night and this product has not met my expectations. The window insert has reduced car noise, however has done nothing for the train noise sound. I confirmed with reps over and over prior to purchasing the product and they reassured me that this insert would be great for my issue - however here we are. I am out a large sum of money with a product that does not meet expectations. In addition, the shipping process was absolutely terrible. First, you need to purchase the product after a deposit for measurement tools - I waited months and months with no feedback on why the product was taking so long. I asked constantly and finally received a response that product was being shipped soon. I received a call from a third party shipping telling me a timeslot the product would be coming, however with no email confirmation which was a bit sketchy. Hopefully this review helps others.