The higher the OITC ranking, the higher a window is at decreasing sound transmission. Traditional one-pane windows with wood or vinyl frames have an OITC of 19. They dampened some noise but were not entirely noise blocking. They did a good job of blocking out light-weight and heat; we’d set https://zanderdoxen.thechapblog.com/29378084/soundproof-windows-for-dummies