kilmat sr 36 sqft car sound deadening mat, butyl automotive sound deadener, audio noise insulation and dampening kilmat kilmat sr 80 mil automotive butyl and foil sound deadening is the ultimate solution for those who would like to save money without compromising on quality. now the material is 1,5 times thicker so you are getting 1,5 times more effective insulation. consisting of butyl automotive self-adhesive insulation kilmat sr has a total weight of 0.5 lbs/1sqft. kilmat sr 80 mil is a light-weighted sound deadening material that ensures an optimum efficiency and sound insulation. audio insulation kilmat sr has special indicators which help you to install it correctly and professionally. once the special embossing on the foil is pressed out with a roller rendering it plain and smooth, you can be 100% sure that the insulation is set properly! the sound dampening material comes in handy size sheets making it easy to cut and apply! sound deadening material specifications: nominal thickness 80 mil; total coverage area of 36 sq.feet; number of sheets in the stack 34; nominal sheet size 9.8 x 15.7 inch. roller is not included.