3M Noise - Vibration and Harshness Dampening Material is a flexible adhesive-type material used to reduce noise and vibration between panels where long work time is required. This product can be applied between roof skins and roof bows - door skins and door intrusion beams - or other areas using non-structural type foam materials - providing up to 1 inch (2.54 cm) thick layer of flexible material on vertical and overhead applications. It can also beapplied over existing damping material as long as the original material is stillintegrally bonded.