suspention ceiling board T-grids: 1. main tee: 32*24*3000(10'ft)/3600(12'ft) 2. cross tee: 26*24*1200(4'ft) 3. cross tee: 26*24*600(2'ft) 4. wall angle: 22*22*3000 5. thickness: 0.25mm , 0.27mm, 0.3mm, 0.4mm 6. the length, thickness and color can be provided in accordance with customers' reauirements. high quality hot-dipped galvanized steel coil used, zinc volume: about 80g, 2 times painted, 2 times baking, the thickness of paintiong is no less than 0.25mm the most advanced machines adopted, the precision of our products is the first class in the world, and no wave or bent after installation, no accumulated tolerance and with great load-bearing. it is also admp protection, fire resistance, no oxidezing, no color changing and last long.we are professional manufactures and export company. be sure to meet different requirement for all our customers with our first class products and better services. Accessroies: Mineral fiber ceiling board: 1)Fire Performance:Meet GB8624-1997 Class B1 2)Asbestos Free 3)Formaldehyde Free 4)Fiber content:≥90% 5)Color of Surface:White 6)Noise Reduction Coefficient:Nrc-0.4-0.6 Depending On The Patttern And The Thichness 7)Light Reflectivity:More than 85% 8)RH:≥90% 9)Sound absorption:EN20140-1994 10)Standard Thickness:12mm,13mm,14mm,15mm,16mm,18mm,20mm etc. 11)Standard Dimensions:595*595,600*600,603*603*,and a variety of special-shaped board etc. 12)Edge details:flat,tregular,concealed and shiplap etc. 13)Water content:≤3% 14)Mold resistant 15)Thermal conductivity: ≤0.065W/mk Useness:office,halls,amphitheatres,medical environment,clean rooms,computation rooms,business rooms,asepsis workshop.,boardrooms,medical care centers,optimistic offices,studios and places requested for special acoustics. installation: