Model: MT50A Installation: horizontal, vertical (Accessories: Angle, light steel keel bolts, hoop, pull rivets, wire rope) Color: Frame color choice Weight: 12kg/m2 Dosage: 45-60% of the roof area Structure: aluminum alloy frame on both sides are irregular diamond pattern aluminum surface protection, built-absorption of cotton Owens Corning Fire Performance: A / B1 level Environmental protection: formaldehyde turn release ≤ 0.4mg / L, to meet the "interior decoration materials and wood-based panels cotton products formaldehyde emission (GB18580-2001) 24-hour release of glass fiber particles release 0mg/m3 better than the national E1 class standard requirements, the standard limit 0.15mg/m3 standard. Common Specifications: 600*1200*50mm 1800*900*50mm Scope: stadiums, airports, railway stations and other large space to control the reverberation time.