Vertek/XTC Acoustic Sound Damping Foam ADF can be used in place of fiberglass to damp door panel, trunk, dash, and speaker enclosure Can be used inside door panels to stop resonance problems caused by lock and window assembly parts Will not degrade from water or moisture and will withstand years of harsh punishment Can be easily cut to size, shaped to panels and parts Can be used to absorb reflective frequencies when loudspeakers are mounted in door panels