FLEXIBLE, .047" THICK, VISCO-ELASTIC SOUND-DAMPING MATERIALAPPROPRIATE WHEN THERE IS APPRECIABLE VIBRATION ENERGY BEING DISPERSED FROMA STRUCTURAL PART OF THE VEHICLEEXUDES NO ODORS, HAS GREAT FLEXIBILITY, INSTALLS EASILY & STOPS VIBRATION NOISEUSE FOR INTERIOR PANELS, TRUNKS,DOORS & AROUND SPEAKERSRETAIL PACKAGE OF FOUR 12" X 12" PANELS