I didn't expect acoustics to matter, yet perforation patterns, backing products

https://andrexfun437.theburnward.com/copper-doesn-t-lie-why-designers-pick-salvo-metal-works-for-personalized-smokeshaft-shrouds-that-last-a-century

I didn't expect acoustics to matter, yet opening patterns, backing materials, and panel depths in metal ceilings tame echo while keeping crisp, modern lines.