DynaPad Automotive Roll Part Number: #21100 Contains: 32 in. x 54 in. long roll 3/8 inch thick four-part composite with 1lb per square foot barrier material (12 square feet total) DynaPad is a four-layer composite barrier that provides excellent acoustic attenuation and thermal insulation. This heavier material utilizes "Dissimilar Layer Insulating" technology that solves two of the most difficult automotive problems - exhaust system heat and low frequency noise. DynaPad is used primarily on the floor. | | | |