CALVERO acoustic lining is an absorptive solution designed for installation on straight and curved walls. The lining is most often used on tunnel accesses and in the tunnels themselves. It can also be installed on retaining walls. The advantage of CALVERO lining, in addition to noise reduction, is the ability to hide any irregularities in the walls.rnrnThe lining is offset from the wall on which it is installed. The sound-absorbing material is mineral wool mounted on CALVERO system profiles. This solution can also be used on the walls of halls and buildings for protection against excessive noise levels.