... -resistance grade B 4.Decorative and acoustic panel 5.Model:13-3 Materials Introduced fiber composite panelMantex Polyster Fiber Acoustic Panel fiber ... , SquareBackAcoustic Black FleeceRegular Model13-3,14-2,17-4,18-3,28-4,29-3,38.5-4,40-3,59-5,60-4 ... -resistance grade B4.Decorative and acoustic panel5.Model:13-3 Can be used inAuditoriums,Multi Purpose Halls,Universities,Cinemas,Exhibtion ...