Class 019
Non-Metallic Building Material Products
Audio and acoustic products for sound insulation, security, and privacy, namely architectural sound barriers, absorbers, and diffusers, acoustic membranes, acoustic separation units, nonstructural, nonmetal building materials, namely ceiling tiles, acoustical curtains, acoustical liners, wall partitions and wall panels; audio and acoustic products for sound insulation, security, and privacy, namely structural sound barriers, sound absorbers and diffusers.
