Very sticky self-adhesive 50 mil automotive butyl and foil sound deadening. It is user-friendly viable material suitable for DIY installation. KILMAT is really efficient and easy-to-install | Now everyone can easily eliminate the annoying road noise in the vehicle. We've designed the product that pretty efficiently handles the rattle and reduces noise while being affordable to almost everyone. KILMAT would deaden the entire car for the same money that would be enough to only insulate the doors using the expensive brands material. | Automotive self-adhesive insulation consists of butyl. KILMAT sound deadening has a total weight of 0.35 pounds/1 square feet (1.75 kilograms/1 square meter). This weight ensures optimum efficiency and sound insulation that could be possibly gained from 50 mil (1.3 mm) thickness material. KILMAT 50 mil (1.3 mm) is light weighted sound deadening material | Car insulation KILMAT has a special indicator as to if it is installed correctly. The special embossing on the foil must be rolled out till it is plain smooth, then you'll be 100% sure that the soundproofing is set correctly and professionally. The sound dampening material comes in handy size sheets which make it easier in terms of cutting and installation process | Sound deadening material specifications: Nominal thickness 50 mil (1.3 mm); Total coverage area of 25 square feet (2.3 square meter); Number of sheets in the stack 12; Nominal sheet Size 20x15 inch (500 x 390 mm).