3 In 1 Acoustic Deadener

240 mil thick    3 in 1 Deadener (Dampens panels, repels heat, and stops reverberations)   1.8 Sq Ft Per Sheet - .48 LB per Sq Ft   Mass Loaded Vinyl (Prevents Reverberations) - Totaling 180 mil   High Temp Butyl Rubber (Dampens...