Stinger RKO12 32" x 54" Overkill Foam Damping Mat for Body Panels - 1 Per Pack (12 SQ.FT)RKO12 RoadKills Overkill foam damping mat eliminates unwanted noises that can diminish your audio systems performance or make things like hands free calls hard to hear. Overkill foam mat is a dense 1 4" foam that can be used for interior door panel damping, and commonly used for speaker barrier gasket damping. It decimates high frequency noise and eliminates annoying interior squeaks and rattles. Providing a last layer of defence against panel