The independent laboratory’s testing in the sound proof wooden doorway body device fulfills the latest specifications. Seem resistance Wooden and metal doors from 50mm to 60mm thickness. Sounds resistance from STC 35 to STC 45. Both possibilities involve electric locks that fit common cylindrical and mortise lock preparations without any https://woodenacousticdoors51166.collectblogs.com/83367224/an-unbiased-view-of-wooden-acoustic-doors