I really did not expect acoustics to matter, yet perforation patterns, backing products

https://mylesoucu167.wpsuo.com/salvo-metal-works-the-designer-s-companion-for-100-year-copper-chimney-shrouds

I really did not expect acoustics to matter, yet opening patterns, backing materials, and panel midsts in steel ceilings tame echo while maintaining crisp, contemporary lines.