Reduce vibration and the noise that distorts the great sound coming from your speakers with the HushMat Ultra Speaker Sound Deadening Kit with Stealth Black Foil. Which sounds better—a home theater speaker or a car door speaker? The home speaker, of course! What's the difference? It's the enclosure. A metal door full of holes can't compete with a finely crafted wooden cabinet. This speaker kit creates an anti-vibration gasket between the speaker and the metal door. When the speaker cone moves, the vibration of the speaker does not transfer to the metal door and create distorting vibration. HushMat requires no tools or surface prep. It works over a wide temperature range. It can be applied to both pre-painted and top-coated metal surfaces, is compatible with automotive coatings and will not contaminate spray operations. HushMat is the only OEM specified and approved sound deadening and thermal insulating material available to the automotive aftermarket. This kit contains 2 sheets of 10 in. x 10 in. Stealth Black Foil for 1.4 sq. ft. of coverage.