product name: fiberglass acoustical panel usage: cinema, theater, conference room, auditorium, sports center NRC value=0.9 product name: fiberglass acoustical panelcomposition: fiberglass acoustical wall panels covered by 100% FR polyester fabric.Edge: square edge, bevel edgethickness: 25mm, 50mm, etcSize: 1200*2400mm, 1200*1200mm, 1200*600mm, 600*600mmFire rating: ASTM E 84 ASound absorption: ...