Sound control and energy efficiency designed for superior comfort. With the Serenity Series by AMSCO Windows, homeowners can significantly reduce the level of noise entering their home through the windows. The Serenity Series is ideal for combating noise pollution from nearby major highways, airports, railroads and industry. Plus, the inherent design of the Serenity Series makes this window very energy efficient. Reduce unwanted noise and save on energy costs - a perfect combination.