The panel Is great. So far the noise reduction has been more than I expected. I share a wall with my neighbor and his dog barks down towards my single pane window and it used to drive me insane. I can barely hear the barks anymore. The barks are very muffled and wonderful. I actually hear my music better now too because it also blocks most of the highway noises that use to come in. I don’t hear the sirens or motorcycles anymore. Very impressed. Very simple to install. There was some anxiety about the measurements I took and whether it would fit but they fit perfectly. No complaints. I just wish I can afford a second one. Maybe in the future Thanks