The world has become a much noisier place, and we’re surrounded by distractions. The average city-dweller is pretty good at filtering out unimportant sounds over the course of a typical day, but most of us need peace and quiet as we rest and as we work. There’s nothing wrong with using a little background music to create some ambient sound, but there’s no volume knob or off switch for traffic noise and the sounds of lawnmowers outside. Fortunately, our team at National Custom Hollow Metal is here to help! We can build Sound Transmission Control (STC) doors to your exact specifications and ship them on your schedule.