Sound insulation panel introduction : It is a kind of very good sound proof board. The Sound Insulation panel size is 1220x2440x16mm, it has three layers. It’s a kind of very good environment-protected products, and its fire-proof too. The installation is very easy, it can be mixed with other products and installed together. Sound Insultaion Panel Features: 1>sound insulation average volume is abou 48dB. 2>environment protection and anti-fire: E1 grade environment protect and anti-fire grade can reach A grade. 3>explosion prevention: it can prevent the explosion after hit by nonego and also can use used at humid environment. 4>weather resistance and wear: the product has the features of water resistence, trvioresistant and it won't change its quality becasue of rain water or weather changes. 5>easy installation: can be cut ans sawed, and also can be installed together with other deco materials.