Product Detail dense, limp-mass vinyl material that is about 6dB more effective than solid lead at stopping the transmission of sound Service Temperature: -40° to 180° F Tensile Strength: 400 psi Tear Strength: 70#/inch; Flammability: Rated UL94 S.E. "0"; Passes test MVSS-302 . The "Auralex J-30SHBL SheetBlok 30'x4'x0.125 Roll of Mass-Loaded Vinyl in Black Only" is best product for you. We recommended Auralex J-30SHBL SheetBlok 30'x4'x0.125 Roll of Mass-Loaded Vinyl in Black Only