Exactly what does a 70% reduction in noise sound like? Listen to exactly how much the music is lowered even from Within the window! I purchased two Indow window inserts for two west-dealing with Bed room windows. These windows are exposed to the new afternoon sun, making it tricky https://how-to-buy-art02364.blogoxo.com/35520467/the-smart-trick-of-quiet-windows-that-nobody-is-discussing