Acoustic panels are semi-rigid panels which are made of rock-wool fibers imbued with special resin. The open fibrous structure of these panels has strong characteristics in noise absorption and noise reduction. Acoustic rock-wool panels reduce airborne outside noise and provide appropriate places for relaxation or speeches. Rock-wool acoustic panels can easily reduce noise levels up to 30dB which is quite proper for residential buildings, hospitals, schools, conferences and seminar halls, cinemas and theaters, shopping centers and etc. Acoustic panels have normal medium and high densities according to ASTM C612.